SD2:Beo.Schwim. 210mm

 is a German Artillery unit in Steel Division II.

Background
This Schwimmwagen carries the forward observation team from a 21 cm Mörser 18 battery. 21 cm Mörser 18 replaced the Great War era 21 cm Mörser 16. The Gun carriage had a  dual-recoil syste a dual-recoil system in which  whole top carriage, which carried the barrel and its cradle, recoiled across the main part of the carriage. The carriage was also used by 17 cm Kanone 18. Production started in 1939 and ended in 1942 being replaced by 17 cm Kanone 18 but production restarted in 1943. 21 cm Mörser 18 were used by independent artillery battalion and batteries along with coastal artillery forces.