History of the Peloponnesian War

3. Likewise the Athenians shall go to the relief of Argos, Mantinea, and Elis, if an enemy invade the country of Elis, Mantinea, or Argos, according as the above cities may require by message, in such way as they most effectually can, to the best of their power. But if the invader be gone after plundering the territory, the state offending shall be the enemy of the Athenians, Argives, Mantineans, and Eleans, and war shall be made against it by all these cities, and peace may not be made with that state except all the above cities agree to it.

4. No armed force shall be allowed to pass for hostile purposes through the country of the powers contracting, or of the allies in their respective empires, or to go by sea, except all the cities—that is to say, Athens, Argos, Mantinea, and Elis—vote for such passage.

5. The relieving troops shall be maintained by the city sending them for thirty days from their arrival in the city that has required them, and upon their return in the same way; if their services be desired for a longer period the city that sent for them shall maintain them, at the rate of three Aeginetan obols per day for a heavy-armed soldier, archer, or light soldier, and an Aeginetan drachma for a trooper.

6. The city sending for the troops shall have the command when the war is in its own country; but in case of the cities resolving upon a joint expedition the command shall be equally divided among all the cities.