The league was organized with Sparta as the hegemon, and was controlled by the council of allies which was composed of two bodies: the assembly of Spartiates and the Congress of Allies. Each allied state had one vote in the Congress, regardless of that state's size or geopolitical power. No tribute was paid except in times of war (mainly against the Delian league), when one third of the military of a state could be requested. Only Sparta could call a Congress of the League. All alliances were made with Sparta only, so if they so wished, member states had to form separate alliances with each other. Wars among the members were possible as well, with Thucydides mentioning a battle between Mantineans and Tegeans (and their respective allies) during the Peloponnesian war. And although each state had one vote, League resolutions were not binding on Sparta. In addition, the "one state, one vote" principle allowed Sparta to often ensure a formal majority through the smaller towns it could dominate directly. Thus, the Peloponnesian League was not an "alliance" in the strictest sense of the word (nor was it wholly Peloponnesian for the entirety of its existence). The common name used in contemporary documents was "The Lacedemonians and their allies", emphasizing the leadership of Sparta. However, other "poleis" could hold influence comparable to Sparta herself, especially Corinth, due to its wealth and navy.