armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"

battalion - an army unit usually consisting of a headquarters and three or more companies

U. S. Army, United States Army, US Army, USA - the army of the United States of America; organizes and trains soldiers for land warfare