Alcibiades, son of Clinias, from the deme of Scambonidae (Greek: Ἀλκιβιάδης Κλεινίου Σκαμβωνίδης; c. 450 – 404 BC), was a prominent Athenian statesman, orator, and general. He was the last famous member of his mother's aristocratic family, the Alcmaeonidae, which fell from prominence after the Peloponnesian War. He played a major role in the second half of that conflict as a strategic advisor, military commander, and politician.

During the course of the Peloponnesian War, Alcibiades changed his political allegiance on several occasions. In his native Athens in the early 410s BC, he advocated an aggressive foreign policy, and was a prominent proponent of the Sicilian Expedition, but fled to Sparta after his political enemies brought charges of sacrilege against him. In Sparta, he served as a strategic adviser, proposing or supervising several major campaigns against Athens. In Sparta too, however, Alcibiades soon made powerful enemies and was forced to defect to Persia. There he served as an adviser to the satrap Tissaphernes until his Athenian political allies brought about his recall. He then served as an Athenian General (Strategos) for several years, but his enemies eventually succeeded in exiling him a second time.

The Sicilian Expedition was Alcibiades' idea, and scholars have argued that, had that expedition been under Alcibiades' command instead of Nicias', the expedition might not have met its eventual disastrous fate. In the years that he served Sparta, Alcibiades played a significant role in Athens' undoing; the capture of Decelea and the revolts of several critical Athenian subjects occurred either at his suggestion or under his supervision. Once restored to his native city, however, he played a crucial role in a string of Athenian victories that eventually brought Sparta to seek a peace with Athens. He favored unconventional tactics, frequently winning cities over by treachery or negotiation rather than by siege. Alcibiades' military and political talents frequently proved valuable to whichever state currently held his allegiance, but his propensity for making powerful enemies ensured that he never remained in one place for long; and, by the end of the war he had helped rekindle in the early 410s, his days of political relevance were a bygone memory.

Alcibiades was born in ancient Athens, the son of Cleinias and Deinomache. His mother was the daughter of Megacles, and could trace her family back to Eurysaces and the Telamonian Ajax. Alcibiades thereby, through his mother, belonged to the powerful and controversial family of the Alcmaeonidae; the renowned Pericles and his brother Ariphron were Deinomache's cousins, as her father and their mother were siblings. His maternal grandfather, also named Alcibiades, was a friend of Cleisthenes, the famous constitutional reformer of the late 6th century BC. After the death of Cleinias at the Battle of Coronea (447 BC), Pericles and Ariphron became his guardians. According to Plutarch, Alcibiades had several famous teachers, including Socrates, and was well trained in the art of Rhetoric. He was noted, however, for his unruly behavior, which was mentioned by ancient Greek and Latin writers on several occasions.

Alcibiades took part in the Battle of Potidaea in 432 BC, where Socrates was said to have saved his life and again at the Battle of Delium in 424 BC. Alcibiades had a particularly close relationship with Socrates, whom he admired and respected. According to Plutarch, Alcibiades "feared and reverenced Socrates alone, and despised the rest of his lovers".

Alcibiades was married to Hipparete, the daughter of Hipponicus, a wealthy Athenian. According to Plutarch, Hipparete loved her husband, but she attempted to divorce him because he consorted with courtesans. She lived with him until her death and gave birth to two children, a daughter and a son, Alcibiades the Younger.

Alcibiades first rose to prominence when he began advocating aggressive Athenian action after the signing of the Peace of Nicias. That treaty, an uneasy truce between Sparta and Athens signed midway through the Peloponnesian War, came at the end of seven years of fighting in which neither side had gained a decisive advantage. Historians Arnold W. Gomme and Raphael Sealey believe, and Thucydides reports, that Alcibiades was offended that the Spartans had negotiated that treaty through Nicias and Laches, overlooking him on account of his youth.

Disputes over the interpretation of the treaty led the Spartans to dispatch ambassadors to Athens with full powers to arrange all unsettled matters. The Athenians initially received these ambassadors well, but Alcibiades met with them in secret before they were to speak to the ecclesia (the Athenian Assembly) and told them that the Assembly was haughty and had great ambitions. He urged them to renounce their diplomatic authority to represent Sparta, and instead allow him to assist them through his influence in Athenian politics. The representatives agreed and, impressed with Alcibiades, they alienated themselves from Nicias, who genuinely wanted to reach an agreement with the Spartans. The next day, during the Assembly, Alcibiades asked them what powers Sparta had granted them to negotiate and they replied, as agreed, that they had not come with full and independent powers. This was in direct contradiction to what they had said the day before, and Alcibiades seized on this opportunity to denounce their character, cast suspicion on their aims, and destroy their credibility. This ploy increased Alcibiades' standing while embarrassing Nicias, and Alcibiades was subsequently appointed General. He took advantage of his increasing power to orchestrate the creation of an alliance between Argos, Mantinea, Elis, and other states in the Peloponnese, threatening Sparta's dominance in the region. According to Gomme, "it was a grandiose scheme for an Athenian general at the head of a mainly Peloponnesian army to march through the Peloponnese cocking a snook at Sparta when her reputation was at its lowest". This alliance, however, would ultimately be defeated at the Battle of Mantinea.

Somewhere in the years 416 – 415 BC, a complex struggle took place between Hyperbolos on one side and Nicias and Alcibiades on the other. Hyperbolos tried to bring about the ostracism of one of this pair, but Nicias and Alcibiades combined their influence to induce the people to expel Hyperbolos instead. This incident reveals that Nicias and Alcibiades each commanded a personal following, whose votes were determined by the wishes of the leaders.

Alcibiades was not one of the Generals involved in the capture of Melos in 416 – 415 BC, but Plutarch describes him as a supporter of the decree by which the grown men of Melos were killed and the women and children enslaved. The orator Andocides alleges that Alcibiades had a child by one of these enslaved women.

In 415 BC, delegates from the Sicilian city of Segesta (Greek: Egesta) arrived at Athens to plead for the support of the Athenians in their war against Selinus. During the debates on the undertaking, Nicias was vehemently opposed to Athenian intervention, explaining that the campaign would be very costly and attacking the character and motives of Alcibiades, who had emerged as the supporter of the expedition. On the other hand, Alcibiades argued that a campaign in this new theatre would bring riches to the city and expand the empire, just as the Persian Wars had. In his speech Alcibiades predicted (over - optimistically, in the opinion of most historians) that the Athenians would be able to recruit allies in the region and impose their rule on Syracuse, the most powerful city of Sicily. In spite of Alcibiades' enthusiastic advocacy for the plan, it was Nicias, not he, who turned a modest undertaking into a massive campaign and made the conquest of Sicily seem possible and safe. It was at his suggestion that the size of the fleet was significantly increased from 60 ships to "140 galleys, 5,100 men at arms, and about 1300 archers, slingers, and light armed men". Philosopher Leo Strauss underscores that the Sicilian expedition surpassed everything undertaken by Pericles. Almost certainly Nicias' intention was to shock the assembly with his high estimate of the forces required, but, instead of dissuading his fellow citizens, his analysis made them all the more eager. Against his wishes Nicias was appointed General along with Alcibiades and Lamachus, all three of whom were given full powers to do whatever was in the best interests of Athens while in Sicily.

One night during preparations for the expedition, the hermai, heads of the god Hermes on a plinth with a phallus, were mutilated throughout Athens. This was a religious scandal and was seen as a bad omen for the mission. Plutarch explains that Androcles, a political leader, used false witnesses who accused Alcibiades and his friends of mutilating the statues, and of profaning the Eleusinian Mysteries. Later his opponents, chief among them being Androcles and Thessalus, Cimon's son, enlisted orators to argue that Alcibiades should set sail as planned and stand trial on his return from the campaign. Alcibiades was suspicious of their intentions, and asked to be allowed to stand trial immediately, under penalty of death, in order to clear his name. This request was denied, and the fleet set sail soon after, with the charges unresolved.

As Alcibiades had suspected, his absence emboldened his enemies, and they began to accuse him of other sacrilegious actions and comments and even alleged that these actions were connected with a plot against the democracy. According to Thucydides, the Athenians were always in fear and took everything suspiciously. When the fleet arrived in Catana, it found the state trireme Salaminia waiting to bring Alcibiades and the others indicted for mutilating the hermai or profaning the Eleusinian Mysteries back to Athens to stand trial. Alcibiades told the heralds that he would follow them back to Athens in his ship, but in Thurii he escaped with his crew; in Athens he was convicted in absentia and condemned to death. His property was confiscated and a reward of one talent was promised to whoever succeeded in killing any who had fled. Meanwhile the Athenian force in Sicily, after a few early victories, moved against Messina, where the Generals expected their secret allies within the city to betray it to them. Alcibiades, however, foreseeing that he would be outlawed, gave information to the friends of the Syracusans in Messina, who succeeded in preventing the admission of the Athenians. With the death of Lamachus in battle some time later, command of the Sicilian Expedition fell into the hands of Nicias, whom modern scholars have judged to be an inadequate military leader.

After his disappearance at Thurii, Alcibiades quickly contacted the Spartans, "promising to render them aid and service greater than all the harm he had previously done them as an enemy" if they would offer him sanctuary. The Spartans granted this request and received him among them. In the debate at Sparta over whether to send a force to relieve Syracuse, Alcibiades spoke and instilled fear of Athenian ambition into the Spartan ephors by informing them that the Athenians hoped to conquer Sicily, Italy, and even Carthage. Yale historian Donald Kagan believes that Alcibiades knowingly exaggerated the plans of the Athenians to convince the Spartans of the benefit they stood to gain from his help. Kagan asserts that Alcibiades had not yet acquired his "legendary" reputation, and the Spartans saw him as "a defeated and hunted man" whose policies "produced strategic failures" and brought "no decisive result". If accurate, this assessment underscores one of Alcibiades' greatest talents, his highly persuasive oratory. After making the threat seem imminent, Alcibiades advised the Spartans to send troops and most importantly, a Spartan commander to discipline and aid the Syracusans.

Alcibiades served as a military adviser to Sparta and helped the Spartans secure several crucial successes. He advised them to build a permanent fort at Decelea, just over ten miles (16 km) from Athens and within sight of the city. By doing this, the Spartans cut the Athenians off entirely from their homes and crops and the silver mines of Sunium. This was part of Alcibiades' plan to renew the war with Athens in Attica. The move was devastating to Athens and forced the citizens to live within the long walls of the city year round, making them entirely dependent on their seaborne trade for food. Seeing Athens thus beleaguered on a second front, members of the Delian League began to contemplate revolt. In the wake of Athens' disastrous defeat in Sicily, Alcibiades sailed to Ionia with a Spartan fleet and succeeded in persuading several critical cities to revolt.

In spite of these valuable contributions to the Spartan cause, Alcibiades fell out of favor with the Spartan government at around this time, ruled by Agis II. Leotychides, the son born by Agis' wife Timaia shortly after this, was believed by many to be Alcibiades' son. Alcibiades' influence was further reduced after the retirement of Endius, the ephor who was on good terms with him. It is alleged that Astiochus, a Spartan Admiral, was sent orders to kill him, but Alcibiades received warning of this order and defected to the Persian satrap Tissaphernes, who had been supporting the Peloponnesian forces financially in 412 BC.

On his arrival in the local Persian court, Alcibiades won the trust of the powerful satrap and made several policy suggestions which were well received. According to Thucydides, Alcibiades immediately began to do all he could with Tissaphernes to injure the Peloponnesian cause. At his urging, the satrap reduced the payments he was making to the Peloponnesian fleet and began delivering them irregularly. Alcibiades next advised Tissaphernes to bribe the Generals of the cities to gain valuable intelligence on their activities. Lastly, and most importantly, he told the satrap to be in no hurry to bring the Persian fleet into the conflict, as the longer the war dragged out the more exhausted the combatants would become. This would allow the Persians to more easily conquer the region in the aftermath of the fighting. Alcibiades tried to convince the satrap that it was in Persia's interest to wear both Athens and Sparta out at first, "and after docking the Athenian power as much as he could, forthwith to rid the country of the Peloponnesians". Although Alcibiades' advice benefited the Persians, it was merely a means to an end; Thucydides tells us that his real motive was to use his alleged influence with the Persians to effect his restoration to Athens.

Alcibiades seemed to assume that the "radical democracy" would never agree to his recall to Athens. Therefore, he exchanged messages with the Athenian leaders at Samos and suggested that if they could install an oligarchy friendly to him he would return to Athens and bring with him Persian money and possibly the Persian fleet of 147 triremes. Alcibiades set about winning over the most influential military officers, and achieved his goal by offering them a threefold plan: the Athenian constitution was to be changed, the recall of Alcibiades was to be voted, and Alcibiades was to win over Tissaphernes and the King of Persia to the Athenian side. Most of the officers in the Athenian fleet accepted the plan and welcomed the prospect of a narrower constitution, which would allow them a greater share in determining policy. According to Thucydides, only one of the Athenian Generals at Samos, Phrynichus, opposed the plan and argued that Alcibiades cared no more for the proposed oligarchy than for the traditional democracy. The involvement in the plot of another General, Thrasybulus, remains unclear.

These officers of the Athenian fleet formed a group of conspirators, but were met with opposition from the majority of the soldiers and sailors; these were eventually calmed down "by the advantageous prospect of the pay from the king". The members of the group assembled and prepared to send Pisander, one of their number, on an embassy to Athens to treat for the restoration of Alcibiades and the abolition of the democracy in the city, and thus to make Tissaphernes the friend of the Athenians.

Phrynichus, fearing that Alcibiades if restored would avenge himself upon him for his opposition, sent a secret letter to the Spartan Admiral, Astyochus, to tell him that Alcibiades was ruining their cause by making Tissaphernes the friend of the Athenians, and containing an express revelation of the rest of the intrigue. Astyochus went up to Alcibiades and Tissaphernes at Magnesia and communicated to them Phrynichus's letter. Alcibiades responded in kind, sending to the authorities at Samos a letter against Phrynichus, stating what he had done, and requiring that he should be put to death. Phrynichus in desperation wrote again to Astyochus, offering him a chance to destroy the Athenian fleet at Samos. This also Astyochus revealed to Alcibiades who informed the officers at Samos that they had been betrayed by Phrynichus. Alcibiades however gained no credit, because Phrynichus had anticipated Alcibiades' letter and, before the accusations could arrive, told the army that he had received information of an enemy plan to attack the camp and that they should fortify Samos as quickly as possible.

Despite these events, Pisander and the other envoys of the conspirators arrived at Athens and made a speech before the people. Pisander won the argument, putting Alcibiades and his promises at the center. The Ecclesia deposed Phrynichus and elected Pisander and ten other envoys to negotiate with Tissaphernes and Alcibiades.

At this point, Alcibiades' scheme encountered a great obstacle. Tissaphernes would not make an agreement on any terms, wanting to follow his policy of neutrality. As Kagan points out, Tissaphernes was a prudent leader and had recognized the advantages of wearing each side out without direct Persian involvement. Alcibiades realized this and, by presenting the Athenians with stiffer and stiffer demands on Tissaphernes' behalf, attempted to convince them that he had persuaded Tissaphernes to support them, but that they had not conceded enough to him. Although the envoys were angered at the audacity of the Persian demands, they nevertheless departed with the impression that Alcibiades could have brought about an agreement among the powers if he had chosen to do so. This fiasco at the court of Tissaphernes, however, put an end to the negotiations between the conspirators and Alcibiades. The group was convinced that Alcibiades could not deliver his side of the bargain without demanding exorbitantly high concessions of them and they accordingly abandoned their plans to restore him to Athens.

In spite of the failure of the negotiations, the conspirators succeeded in overthrowing the democracy and imposing the oligarchic government of the Four Hundred, among the leaders of which were Phrynichus and Pisander. At Samos, however, a similar coup instigated by the conspirators did not go forward so smoothly. Samian democrats learned of the conspiracy and notified four prominent Athenians: the generals Leon and Diomedon, the trierarch Thrasybulus, and Thrasyllus, at that time a hoplite in the ranks. With the support of these men and the Athenian soldiers in general, the Samian democrats were able to defeat the 300 Samian oligarchs who attempted to seize power there. Further, the Athenian troops at Samos formed themselves into a political assembly, deposed their generals, and elected new ones, including Thrasybulus and Thrasyllus. The army, stating that they had not revolted from the city but that the city had revolted from them, resolved to stand by the democracy while continuing to prosecute the war against Sparta.

After a time, Thrasybulus persuaded the assembled troops to vote Alcibiades' recall, a policy that he had supported since before the coup. Then he sailed to retrieve Alcibiades and returned with him to Samos. The aim of this policy was to win away Persian support from the Spartans, as it was still believed that Alcibiades had great influence with Tissaphernes. Plutarch claims that the army sent for Alcibiades so as to use his help in putting down the tyrants in Athens. Kagan argues that this reinstatement was a disappointment to Alcibiades, who had hoped for a glorious return to Athens itself but found himself only restored to the rebellious fleet, where the immunity from prosecution he had been granted "protected him for the time being but not from a reckoning in the future"; furthermore, the recall, which Alcibiades had hoped to bring about through his own prestige and perceived influence, was achieved through the patronage of Thrasybulus.

At his first speech to the assembled troops, Alcibiades complained bitterly about the circumstances of his exile, but the greatest part of the speech consisted of boasting about his influence with Tissaphernes. The primary motives of his speech were to make the oligarchs at Athens afraid of him and to increase his credit with the army at Samos. Upon hearing his speech the troops immediately elected him General alongside Thrasybulus and the others. In fact, he roused them so much that they proposed to sail at once for Piraeus and attack the oligarchs in Athens. It was primarily Alcibiades, along with Thrasybulus, who calmed the people and showed them the folly of this proposal, which would have sparked civil war and led to the immediate defeat of Athens. Shortly after Alcibiades' reinstatement as an Athenian general, the government of the Four Hundred was overthrown and replaced by a broader oligarchy, which would eventually give way to democracy.

Presently Alcibiades sailed to Tissaphernes with a detachment of ships. According to Plutarch, the supposed purpose of this mission was to stop the Persian fleet from coming to the aid of the Peloponnesians. Thucydides is in agreement with Plutarch that the Persian fleet was at Aspendus and that Alcibiades told the troops he would bring the fleet to their side or prevent it from coming at all, but Thucydides further speculates that the real reason was to flaunt his new position to Tissaphernes and try to gain some real influence over him. According to the historian, Alcibiades had long known that Tissaphernes never meant to bring the fleet at all.

Alcibiades was recalled by the "intermediate regime" of The Five Thousand, the government which succeeded the Four Hundred in 411, but it is most likely that he waited until 407 BC to actually return to the city. Plutarch tells us that, although his recall had already been passed on motion of Critias, a political ally of his, Alcibiades was resolved to come back with glory. While this was certainly his goal, it was again a means to an end, that end being avoiding prosecution upon his return to Athens.

The next significant part he would play in the war would occur at the Battle of Abydos. Alcibiades had remained behind at Samos with a small force while Thrasybulus and Thrasyllus led the greater part of the fleet to the Hellespont. During this period, Alcibiades succeeded in raising money from Caria and the neighboring area, with which he was able to pay the rowers and gain their favor. After the Athenian victory at Cynossema, both fleets summoned all their ships from around the Aegean to join them for what might be a decisive next engagement. While Alcibiades was still en route, the two fleets clashed at Abydos, where the Peloponnesians had set up their main naval base. The battle was evenly matched, and raged for a long time, but the balance tipped towards the Athenians when Alcibiades sailed into the Hellespont with eighteen triremes. The Persian satrap Pharnabazus, who had replaced Tissaphernes as the sponsor of the Peloponnesian fleet, moved his land army to the shore to defend the ships and sailors who had beached their ships. Only the support of the Persian land army and the coming of night saved the Peloponnesian fleet from complete destruction.

Shortly after the battle, Tissaphernes had arrived in the Hellespont and Alcibiades left the fleet at Sestos to meet him, bringing gifts and hoping to once again try to win over the Persian governor. Evidently Alcibiades had gravely misjudged his standing with the satrap, and he was arrested on arrival. Within a month he would escape and resume command. It was now obvious, however, that he had no influence with the Persians; from now on his authority would depend on what he actually could accomplish rather than on what he promised to do.

After an interlude of several months in which the Peloponnesians constructed new ships and the Athenians besieged cities and raised money throughout the Aegean, the next major sea battle took place the spring of 410 BC at Cyzicus. Alcibiades had been forced to flee from Sestos to Cardia to protect his small fleet from the rebuilt Peloponnesian navy, but as soon as the Athenian fleet was reunited there its commanders led it to Cyzicus, where the Athenians had intelligence indicating that Pharnabazus and Mindarus, the Peloponnesian fleet commander, were together plotting their next move. Concealed by storm and darkness, the combined Athenian force reached the vicinity without being spotted by the Peloponnesians. Here the Athenians devised a plot to draw the enemy into battle. According to Diodorus Siculus, Alcibiades advanced with a small squadron in order to draw the Spartans out to battle, and, after he successfully deceived Mindarus with this ploy, the squadrons of Thrasybulus and Theramenes came to join him, cutting off the Spartans' retreat.

The Spartan fleet suffered losses in the flight and reached the shore with the Athenians in close pursuit. Alcibiades' troops, leading the Athenian pursuit, landed and attempted to pull the Spartan ships back out to sea. The Peloponnesians fought to prevent their ships from being towed away, and Pharnabazus's troops came up to support them. Thrasybulus landed his own force to temporarily relieve pressure on Alcibiades, and meanwhile ordered Theramenes to join up with Athenian land forces nearby and bring them to reinforce the sailors and marines on the beach. The Spartans and Persians, overwhelmed by the arrival of multiple forces from several directions, were defeated and driven off, and the Athenians captured all the Spartan ships which were not destroyed. A letter dispatched to Sparta by Hippocrates, vice - admiral under Mindarus, was intercepted and taken to Athens; it ran as follows: "The ships are lost. Mindarus is dead. The men are starving. We know not what to do". A short time later Sparta petitioned for peace, but their appeals were ultimately rejected by the Athenians.

After their victory, Alcibiades and Thrasybulus began the siege of Chalcedon in 409 BCE with about 190 ships. Although unable to attain a decisive victory or induce the city to surrender, Alcibiades was able to win a small tactical land battle outside of the city gates and Theramenes concluded an agreement with the Chalcedonians. Afterwards they concluded a temporary alliance with Pharnabazus which secured some much needed immediate cash for the army, but despite this Alcibiades was still forced to depart in search for more booty to pay the soldiers and oarsmen of the fleet.

In pursuit of these funds he traveled to the Thracian Chersonese and attacked Selymbria. He plotted with a pro - Athenian party within the city and offered the Selymbrians reasonable terms and imposed strict discipline to see that they were observed. He did their city no injury whatever, but merely took a sum of money from it, set a garrison in it and left. Epigraphical evidence indicates the Selymbrians surrendered hostages until the treaty was ratified in Athens. His performance is judged as skillful by historians, since it saved time, resources, and lives and still fully achieved his goal.

From here Alcibiades joined in the siege of Byzantium along with Theramenes and Thrasyllus. A portion of the citizens of the city, demoralized and hungry, decided to surrender the city to Alcibiades for similar terms as the Selymbrians had received. On the designated night the defenders left their posts, and the Athenians attacked the Peloponnesian garrison in the city and their boats in the harbor. The portion of the citizenry that remained loyal to the Peloponnesians fought so savagely that Alcibiades issued a statement in the midst of the fighting which guaranteed their safety and this persuaded the remaining citizens to turn against the Peloponnesian garrison, which was nearly totally destroyed.

It was in the aftermath of these successes that Alcibiades resolved to finally return to Athens in the spring of 407 BC. Even in the wake of his recent victories, Alcibiades was exceedingly careful in his return, mindful of the changes in government, the charges still technically hanging over him, and the great injury he had done to Athens. Thus Alcibiades, instead of going straight home, first went to Samos to pick up 20 ships and proceeded with them to the Ceramic Gulf where he collected 100 talents. He finally sailed to Gytheion to make inquiries, partly about the reported preparations of the Spartans there, and partly about the feelings in Athens about his return. His inquiries assured him that the city was kindly disposed towards him and that his closest friends urged him to return.

Therefore he finally sailed into Piraeus where the crowd had gathered, desiring to see the famous Alcibiades. He entered the harbor full of fear till he saw his cousin and others of his friends and acquaintance, who invited him to land. Upon arriving on shore he was greeted with a hero's welcome. Nevertheless, some saw an evil omen in the fact that he had returned to Athens on the very day when the ceremony of the Plynteria (the feast where the old statue of Athena would get cleansed) was being celebrated. This was regarded as the unluckiest day of the year to undertake anything of importance. His enemies took note of this and kept it in mind for a future occasion.

All the criminal proceedings against him were canceled and the charges of blasphemy were officially withdrawn. Alcibiades was able to assert his piety and to raise Athenian morale by leading the solemn procession to Eleusis (for the celebration of the Eleusinian Mysteries) by land for the first time since the Spartans had occupied Decelea. The procession had been replaced by a journey by sea, but this year Alcibiades used a detachment of soldiers to escort the traditional procession. His property was restored and the ecclesia elected him supreme commander of land and sea (strategos autokrator).

In 406 BC Alcibiades set out from Athens with 1,500 hoplites and a hundred ships. He failed to take Andros and then he went on to Samos. Later he moved to Notium, closer to the enemy at Ephesus. In the meanwhile Tissaphernes had been replaced by Cyrus the Younger (son of Darius II of Persia) who decided to financially support the Peloponnesians. This new revenue started to attract Athenian deserters to the Spartan navy. Additionally the Spartans had replaced Mindarus with Lysander, a very capable Admiral. These factors caused the rapid growth of the Peloponnesian fleet at the expense of the Athenian. In search of funds and needing to force another decisive battle, Alcibiades left Notium and sailed to help Thrasybulus in the siege of Phocaea. Alcibiades was aware the Spartan fleet was nearby, so he left nearly eighty ships to watch them under the command of his personal helmsman Antiochus, who was given express orders not to attack. Antiochus disobeyed this single order and endeavored to draw Lysander into a fight by imitating the tactics used at Cyzicus. The situation at Notium, however, was radically different than that at Cyzicus; the Athenians possessed no element of surprise, and Lysander had been well informed about their fleet by deserters. Antiochus's ship was sunk, and he was killed by a sudden Spartan attack; the remaining ships of the decoy force were then chased headlong back toward Notium, where the main Athenian force was caught unprepared by the sudden arrival of the whole Spartan fleet. In the ensuing fighting, Lysander gained an entire victory. Alcibiades soon returned and desperately tried to undo the defeat at Notium by scoring another victory, but Lysander could not be compelled to attack the fleet again.

Responsibility for the defeat ultimately fell on Alcibiades, and his enemies used the opportunity to attack him and have him removed from command, although some modern scholars believe that Alcibiades was unfairly blamed for Antiochus's mistake. Diodorus reports that, in addition to his mistake at Notium, Alcibiades was discharged on account of false accusations brought against him by his enemies. According to Anthony Andrewes, professor of ancient history, the extravagant hopes that his successes of the previous summer had created were a decisive element in his downfall. Consequently Alcibiades condemned himself to exile. Never again returning to Athens, he sailed north to the castles in the Thracian Chersonese, which he had secured during his time in the Hellespont. The implications of the defeat were severe for Athens. Although the defeat had been minor, it occasioned the removal of not only Alcibiades but also his allies like Thrasybulus, Theramenes and Critias. These were likely the most capable commanders Athens had at the time and their removal would help lead to the Athenian surrender only two years later after their complete defeat at Aegospotami.

With one exception, Alcibiades' role in the war ended with his command. Prior to the Battle of Aegospotami, in the last attested fact of his career, Alcibiades recognized that the Athenians were anchored in a tactically disadvantageous spot and advised them to move to Sestus where they could benefit from a harbor and a city. Diodorus, however, does not mention this advice, arguing instead that Alcibiades offered the Generals Thracian aid in exchange for a share in the command. In any case, the Generals of the Athenians, "considering that in case of defeat the blame would attach to them and that in case of success all men would attribute it to Alcibiades", asked him to leave and not come near the camp ever again. Days later the fleet would be annihilated by Lysander.

After the Battle of Aegospotami, Alcibiades crossed the Hellespont and took refuge in Phrygia, with the object of securing the aid of Artaxerxes against Sparta.

Much about Alcibiades' death is now uncertain, as there are conflicting accounts. According to the oldest of these, the Spartans and specifically Lysander were responsible. Though many of his details cannot be independently corroborated, Plutarch's version is this: Lysander sent an envoy to Pharnabazus who then dispatched his brother to Phrygia where Alcibiades was living with his mistress, Timandra. In 404 BC, as he was about to set out for the Persian court, his residence was surrounded and set on fire. Seeing no chance of escape he rushed out on his assassins, dagger in hand, and was killed by a shower of arrows. According to Aristotle, the site of Alcibiades’ death was Elaphus, a mountain in Phrygia.

In ancient Greece, Alcibiades was a polarizing figure. Thucydides reprehends the Athenian statesman for his political conduct and motives. According to the historian, Alcibiades, being "exceedingly ambitious", proposed the expedition in Sicily in order "to gain in wealth and reputation by means of his successes". Alcibiades is not held responsible by Thucydides for the destruction of Athens, since "his habits gave offence to every one, and caused the Athenians to commit affairs to other hands, and thus before long to ruin the city". Plutarch regards him as "the least scrupulous and most entirely careless of human beings". On the other hand, Diodorus argues that he was "in spirit brilliant and intent upon great enterprises". Sharon Press of Brown University points out that Xenophon emphasizes Alcibiades' service to the state, rather than the harm he was charged with causing it. Demosthenes defends Alcibiades's achievements, saying that he had taken arms in the cause of democracy, displaying his patriotism, not by gifts of money or by speeches, but by personal service. For Demosthenes and other orators, Alcibiades epitomized the figure of the great man during the glorious days of the Athenian democracy and became a rhetorical symbol. One of Isocrates' speeches, delivered by Alcibiades the Younger, argues that the statesman deserved the Athenians' gratitude for the service he had given them. Lysias, on the other hand, argued in one of his orations that the Athenians should regard Alcibiades as an enemy because of the general tenor of his life, as "he repays with injury the open assistance of any of his friends". In the Constitution of the Athenians, Aristotle does not include Alcibiades in the list of the best Athenian politicians, but in Posterior Analytics he argues that traits of a proud man like Alcibiades are "equanimity amid the vicissitudes of life and impatience of dishonor". Alcibiades excited in his contemporaries a fear for the safety of the political order. Therefore, Andocides said of him that "instead of holding that he ought himself to conform with the laws of the state, he expects you to conform with his own way of life". Central to the depiction of the Athenian statesman is Cornelius Nepos' famous phrase that Alcibiades "surpassed all the Athenians in grandeur and magnificence of living".

Even today, Alcibiades divides scholars. For Malcolm F. McGregor, former head of the Department of Classics in the University of British Columbia, Alcibiades was rather a shrewd gambler than a mere opportunist. Evangelos P. Fotiadis, a prominent Greek philologist, asserts that Alcibiades was "a first class diplomat" and had "huge skills". Nevertheless his spiritual powers were not counter - balanced with his magnificent mind and he had the hard luck to lead a people susceptible to demagoguery. K. Paparrigopoulos, a major modern Greek historian, underlines his "spiritual virtues" and compares him with Themistocles, but he then asserts that all these gifts created a "traitor, an audacious and impious man". Walter Ellis believes that his actions were outrageous, but they were performed with panache. For his part, David Gribble argues that Alcibiades' actions against his city were misunderstood and believes that "the tension which led to Alcibiades' split with the city was between purely personal and civic values". Russell Meiggs, a British ancient historian, asserts that the Athenian statesman was absolutely unscrupulous despite his great charm and brilliant abilities. According to Meiggs his actions were dictated by selfish motives and his feud with Cleon and his successors undermined Athens. The same scholar underscores the fact that "his example of restless and undisciplined ambition strengthened the charge brought against Socrates". Even more critically, Athanasios G. Platias and Constantinos Koliopoulos, professors of strategic studies and international politics, state that Alcibiades' own arguments "should be sufficient to do away with the notion that Alcibiades was a great statesman, as some people still believe". Writing from a different perspective, psychologist Anna C. Salter cites Alcibiades as exhibiting "all the classic features of psychopathy."

Despite his critical comments, Thucydides admits in a short digression that "publicly his conduct of the war was as good as could be desired". Diodorus and Demosthenes regard him as a great general. According to Fotiadis, Alcibiades was an invincible general and, wherever he went, victory followed him; had he led the army in Sicily, the Athenians would have avoided disaster and, had his countrymen followed his advice at Aegospotami, Lysander would have lost and Athens would have ruled Greece. On the other hand, Paparrigopoulos believes that the Sicilian Expedition, prompted by Alcibiades, was a strategic mistake. In agreement with Paparrigopoulos, Platias and Koliopoulos underscore the fact that the Sicilian expedition was a strategic blunder of the first magnitude, resulting from a "frivolous attitude and an unbelievable underestimation of the enemy". For his part, Angelos Vlachos, a Greek Academician, underlines the constant interest of Athens for Sicily from the beginning of the war. According to Vlachos the expedition had nothing of the extravagant or adventurous and constituted a rational strategic decision based on traditional Athenian aspirations. Vlachos asserts that Alcibiades had already conceived a broader plan: the conquest of the whole West. He intended to conquer Carthage and Libya, then to attack Italy and, after winning these, to seize Italy and Peloponnesus. The initial decision of the ecclesia provided however for a reasonable military force, which later became unreasonably large and costly because of Nicias' demands. Kagan criticizes Alcibiades for failing to recognize that the large size of the Athenian expedition undermined the diplomatic scheme on which his strategy rested.

Kagan believes that while Alcibiades was a commander of considerable ability, he was no military genius, and his confidence and ambitions went far beyond his skills. He thus was capable of important errors and serious miscalculations. Kagan argues that at Notium, Alcibiades committed a serious error in leaving the fleet in the hands of an inexperienced officer, and that most of the credit for the brilliant victory at Cyzicus must be assigned to Thrasybulus. In this judgement, Kagan agrees with Cornelius Nepos, who said that the Athenians' extravagant opinion of Alcibiades' abilities and valor was his chief misfortune.

Press argues that "though Alcibiades can be considered a good General on the basis of his performance in the Hellespont, he would not be considered so on the basis of his performance in Sicily", but "the strengths of Alcibiades' performance as a General outweigh his faults". Professors David McCann and Barry Strauss attempt a comparison between Alcibiades and Douglas MacArthur, pointing out that "both men stood out as military leaders to whom a mystique attached itself".

Plutarch asserts that "Alcibiades was a most able speaker in addition to his other gifts", while Theophrastus argues that Alcibiades was the most capable of discovering and understanding what was required in a given case. Nevertheless, he would often stumble in the midst of his speech, but then he would resume and proceed with all the caution in the world. Even the lisp he had, which was noticed by Aristophanes, made his talk persuasive and full of charm. Eupolis says that he was "prince of talkers, but in speaking most incapable"; which is to say, more eloquent in his private discourses than when orating before the ecclesia. For his part, Demosthenes underscores the fact that Alcibiades was regarded as "the ablest speaker of the day". Paparrigopoulos does not accept Demosthenes's opinion, but acknowledges that the Athenian statesman could sufficiently support his case. Kagan acknowledges his rhetorical power, whilst Thomas Habinek, professor of Classics at the University of Southern California, believes that the orator Alcibiades seemed to be whatever his audience needed on any given occasion. According to Habinek, in the field of oratory, the people responded to Alcibiades' affection with affection of their own. Therefore, the orator was "the institution of the city talking to — and loving — itself". According to Aristophanes, Athens "yearns for him, and hates him too, but wants him back".

Alcibiades has not been spared by ancient comedy and stories attest to an epic confrontation between Alcibiades and Eupolis resembling that between Aristophanes and Cleon. He also appears as a character in several Socratic dialogues (Symposium, Protagoras, Alcibiades I and II, as well as the eponymous dialogues by Aeschines Socraticus and Antisthenes). Purportedly based on his own personal experience, Antisthenes described Alcibiades' extraordinary physical strength, courage, and beauty, saying, "If Achilles did not look like this, he was not really handsome." In his trial, Socrates must rebut the attempt to hold him guilty for the crimes of his former students, including Alcibiades. Hence, he declares in Apology: "I have never been anyone's teacher". Aristophanes mocked his heavy lisp in the satirical play, The Wasps, "Look, Thothiath, Theowuth ith twanthformed. He'th a waven!" He is portrayed as one of Cleon's close friends.

Long after his death, Alcibiades continues to appear in art, both in Medieval and Renaissance works, and in several significant works of modern literature as well. He still fascinates the modern world, doing so most notably as the main character in historical novels of authors like Anna Bowman Dodd, Gertrude Atherton, Rosemary Sutcliff, Daniel Chavarria, Steven Pressfield and Peter Green. He is also a central character in Paul Levinson's time travel novel The Plot To Save Socrates, in Kurt R.A. Giambastiani's time travel novel Unraveling Time, in Erik Satie's Socrate, a work for voice and small orchestra (the text is composed of excerpts of Victor Cousin's translation of works by Plato), and in Joel Richards' Nebula award nominated short story The Gods Abandon Alcibiades. Alcibiades also figures in the satirical Picture This by Joseph Heller and in William Shakespeare's Timon of Athens.

Alcibiades is mentioned in observance II of law 44 " Disarm and infuriate with the mirror effect " in Robert Greene's book 48 laws of Power. In it the author writes about Alcibiades ability to mimic the people he is in the presence of such as the Spartans and then the people of Persia.