HMS Enterprize said:Its because when the war starts US infantry are still using single action rifles where the CS has lots of sub-machine guns.
But then what do you call the standard rifles of Germany, UK, USSR, Italy, and France for the entire war OTL? CSA seems to be using units patterned after German 1944 divisions, but every other country in the world, other than the USA, used single action rifles for the whole of world war two - the USA used semiautomatic gas-powered rifles.