Sd Kfz 251 carriers were used to transport soldiers and heavy armament (mortars, heavy machine guns, guns, flame throwers and rocket launchers). They served as ambulances as well as command and control vehicles. One of the more interesting applications of the carrier was its use as an infared night vision equipment vehicle. Sd Kfz 251 armored personnel carriers were used in 1939–1945 on all fronts of the war. After the end of the WWII, the Czechoslovak army used a modified version of the Sd Kfz 251, the OT 810.