 After the end of the war, Epp formed the "Freikorps Epp", a right-wing paramilitary unit mostly made up of war veterans, of which the future leader of the SA Ernst Röhm was a member.This unit took part in the crushing of the Bavarian Soviet Republic in Munich, being responsible for various massacres.Epp joined the "Reichswehr" and was promoted to Generalmajor in 1922.