An army (from Latin armata "act of arming" via Old French armée), in the broadest sense, is the land-based armed forces of a nation. It may also include other branches of the military such as an air force. Within a national military force, the word Army may also mean a field army, which is an operational formation, usually made up of one or more corps. In several countries the army is officially called the land army to differentiate it from an air force called the air army, notably Franc… (More on Army)