legion
noun
le·gion
| \ ˈlē-jən
\
\
Definition of legion
(Entry 1 of 2)
1
: the principal unit of the Roman army comprising 3000 to 6000 foot soldiers with cavalry
Caesar and his legions defeated the Gauls.
3
: a very large number : multitude
won him … a legion of devoted followers— Irving Kolodin
4
: a national association of ex-servicemen
the American Legion