“U.S. Carbine, CAL. .30, M1.” -War, 1944 A carbine is a firearm similar to a rifle or musket, but generally shorter and of lesser power. Many carbines, especially modern designs, were developed from rifles, being essentially shortened versions of full rifles firing the same ammunition, although often at a lower velocity.
War Department Pamphlet: Army Life (Washington D.C., : United States Government Printing Office, 1944)