Battalion n. : A body of troops; esp. a body of troops or an army in battle array.

Battalion n. : A regiment, or two or more companies of a regiment, esp. when assembled for drill or battle.

Battalion v. t. : To form into battalions.

Example:
What is the modern day Army Calvary company and Battalion like?

Taxonomy
battalion, captain, regiment, infantry regiments, infantry battalion, tank battalions, Battery, Lieutenant Colonel, headquarters, infantry, Marine, brigade, Battalion group, combined arms, headquarters company, company, battalion headquarters, free encyclopedia.

Defination from the web:
battalion is a military unit of around 1000-1500 soldiers usually consisting of between two and seven companies and typically commanded by a Lieutenant Colonel. ... The term battalion is used in the infantry, Royal Electrical and Mechanical Engineers, ((MSSM)) and Intelligence Corps only. ...