With Theramenes he conducted the victory at Cyzicus well after he had avoided the blame for Mantineia by allying with Nicias against Hyperbolus.  
He was the favorite of Cornelius Nepos who dedicated the longest chapter in De viris illustribus, or "Concerning Famous Men," to this figure.  Fearing a public revolt, he had his dog's tail cut off so that the Athenians would say he was eccentric and nothing worse.  With Theramenes he conducted the victory at Cyzicus well after he had avoided the blame for Mantineia by allying with Nicias against Hyperbolus.  Known as a good friend of Socrates and for having been raised in Pericles' house, FTP, name this unscrupulous and sometimes Athenian naval commander of the Peloponnesian War.
He was the favorite of Cornelius Nepos who dedicated the longest chapter in De viris illustribus, or "Concerning Famous Men," to this figure.  
Alcibiades