Originally Posted by robertb6112
I'm pretty sure they where also designed to be a small arms for officers and artillery. So they wouldn't have to carry a full size rifle around.
That was its original purpose, but it was such a good weapon in such a light package its utility grew far beyond that. M1 carbines were carried by our airborn troops in WW2. Audie Murphie's favorite gun was an M1 carbine, he used to stalk German snipers with his. The cartridge may be small for a rifle but keep in mind it is still more powerful than a .357 magnum.