Constitution of the Lacedaimonians (13.3-13.4)

Only when the sacrifice proves acceptable to both these deities does he cross the borders of the land. And the fire from these sacrifices leads the way and is never quenched, and animals for sacrifice of every sort follow. At all times when he offers sacrifice, the King begins the work before dawn of day, wishing to forestall the goodwill of the god.

And at the sacrifice are assembled colonels, captains, lieutenants, commandants of foreign contingents, commanders of the baggage train, and, in addition, any general from the states who chooses to be present.