The M1943 Mortar also known as the SMADRARE is a Soviet 120 millimeter calibre smoothbore mortar first introduced in 1943 as a modified version of the M1938 mortar. It virtually replaced the M1938 as the standard weapon for mortar batteries in all Soviet infantry battalions by the late 1980s, though the armies of the Warsaw Pact utilised both in their forces. An improved version called the 2B11 Sani was also produced by Russia and, in combination with the 2B9 Vasilek, was being used to phase out the M1943 from service.