legions
noun
Definitions
The major unit or division of the Roman army, usually comprising 3000 to 6000 infantry soldiers and 100 to 200 cavalry troops.
A combined arms major military unit featuring cavalry, infantry, and artillery
A large military or semi-military unit trained for combat; any military force; an army, regiment; an armed, organized and assembled militia.
(often Legion or the Legion) A national organization or association of former servicemen, such as the American Legion.