An army of trained civilians, which may be an official reserve army, called upon in time of need, the entire able-bodied population of a state which may also be called upon, or a private force not under government control.
Synonym of militsia: the national police force of certain countries (e.g. Belarus).
A unit of armed troops under the command of an officer, and consisting of several smaller units; now specifically, usually composed of two or more battalions.
To systematize, or put in rigid order.
To form soldiers into a regiment.