Capitalism has always existed in fascist regimes, fascism is Capitalism in decay. Communism is an entirely different structure. Read Blackshirts and Reds.

Communism is communism. Fascism is fascism. Fascism is right wing leaning just like capitalism. Fascism is extreme right wing where capitalism is more center right. Capitalism and fascism go hand in hand.

Communism is on the complete other side of the spectrum.