Advanced Infantry Marine Course (AIMC) Practice Exam

In military organization, a battalion is the level that groups several companies under one commander. It typically includes three to five companies and is led by a lieutenant colonel, sometimes a full colonel for larger battalions. This structure allows coordinated maneuver, logistics, and fire support across a defined force. A regiment or group is larger still and usually consists of multiple battalions, commanded by a colonel. A brigade contains several battalions (or regiments) and is commanded by a colonel or brigadier general. A company, by contrast, is made up of several platoons and is commanded by a captain. Therefore, the unit that contains multiple companies and is typically commanded by a lieutenant colonel is the battalion.