Roman Legion - a division of from 3000 to 6000 men (including cavalry) in the Roman army

Sabaoth - (plural) hosts or armies; used in the book of Romans in the New Testament; "Lord of Sabaoth"

army, ground forces, regular army - a permanent organization of the military land forces of a nation or state

association - a formal organization of people or groups of people; "he joined the Modern Language Association"

force, military force, military group, military unit - a unit that is part of some military service; "he sent Caesar a force of six thousand men"

foreign legion - a military unit composed of foreign volunteers who serve the state

legionary, legionnaire - a soldier who is a member of a legion (especially the French Foreign Legion)

concourse, throng, multitude - a large gathering of people