To Meet the Need for Enlistment in the Army, What

To meet the need for enlistment in the army, what actions were taken?

A) Soldiers must provide their own equipment.
B) Soldiers were hired from Barbarian units.
C) Soldiers need only serve for ten years in order to receive land allocations.
D) Slaves could earn freedom for serving in the military.
E) Women were allowed to serve in non-combat positions.