soldiers or military units that fight on foot, in modern times typically with rifles, machine guns, grenades, mortars, etc., as weapons. 2. a branch of an army composed of such soldiers. Origin of infantry Expand. read more
Infantry is the branch of an army that engages in military combat on foot, distinguished from cavalry, artillery, and tank forces. Also known as foot soldiers, infantry traditionally relies on moving by foot between combats as well, but may also use mounts, military vehicles, or other transport. read more
In the west at Utah Beach the U.S. Fourth Infantry Division encountered almost none, lost 12 men killed in the first 24 hours. read more