| Noun | 1. | army corps - an army unit usually consisting of two or more divisions and their supportarmy unit - a military unit that is part of an army army, ground forces, regular army - a permanent organization of the military land forces of a nation or state Women's Army Corps, WAC - an army corps that was organized in World War II but is no longer a separate branch of the United States Army Reserve Officers Training Corps, ROTC - a training program to prepare college students to be commissioned officers division - an army unit large enough to sustain combat; "two infantry divisions were held in reserve" |