Bau-Bataillon 121

 Bau-Bataillon 121 (Construction Battalion 121) was an auxiliary unit of the Wehrmacht (Nazi Germany) during World War II. The personnel was Germans, nationals of Central Asia (4. Turkestanische Kompanie, 1943-1944), and Georgians (Georgische Kompanie, 1943-1944). It was formed on August 26, 1939. On September 23, 1943 it was renamed Bau-Pionier-Bataillon 121 (Construction Engineering Battalion).