Begleit-Bataillon Reichsführer-SS was formed in May 1941 from Himmler's personal escort. The Begleit-Bataillon fought on the eastern front during Operation Barbarossa. Further, when SS-Brigadeführer Wilhelm Mohnke formed Kampfgruppe Mohnke (Battle Group Mohnke) during the "Battle of Berlin" it was made up in part by 600 men from this battalion.