Lehr-Brigade (mot.) 900 (Motorized Demonstration Brigade) was formed 17 June 1941 by the German Army from school units in preparation for Operation Barbarossa. As such it was considered an elite as many of its personnel were instructors in tactics from various branch schools. It fought in most of the battles in the central sector of the Eastern Front during Barbarossa, notably the Battles of Minsk, Smolensk, Operation Typhoon and the Battle of Moscow before its remnants were withdrawn in April–May 1942.