Complex sentence: After the Russian Revolution he joined the "All-Russian Communist Party (Bolsheviks)" and fought for the Red Army partisan units against the German forces, as well as against Denikin's White Army in a legendary Vasily Chapayev's cavalry division.
Split into simpler sentences: After the Russian Revolution he joined the "All-Russian Communist Party (Bolsheviks)" and fought for the Red Army partisan units against the German forces. As well as against Denikin's White Army in a legendary Vasily Chapayev's cavalry division.