vt to form into battalions.
2. battalion ·noun a body of troops; ·esp. a body of troops or an army in battle array.
3. battalion ·noun a regiment, or two or more companies of a regiment, ·esp. when assembled for drill or battle.
4. battalion ·add. ·noun an infantry command of two or more companies, which is the tactical unit of the infantry, or the smallest command which is self-supporting upon the battlefield, and also the unit in which the strength of the infantry of an army is expressed.