Moon landing the only country to have successfully conducted manned missions to the Moon, with the last departing the lunar surface in December 1972. After the unsuccessful attempt by the Luna 1 to land on the Moon in 1959, the Soviet Union performed the first hard (unpowered) Moon landing later that same year with the Luna 2 spacecraft, a feat the U.S. duplicated in 1962 with Ranger 4. Since then, twelve Soviet and U.S. spacecraft have used braking rockets to make soft landings and perform scientific operations on the lunar surface, between 1966 and 1976. In 1966 the USSR accomplished the first
76 mm divisional gun M1902 Canon de 75 modèle 1897. The USSR continued mass production of M1902 gun until 1931 when it was replaced by its enhanced M1902/30 variant. For Soviet modernization see 76 mm divisional gun M1902/30. Both variants were utilized in the early stages of World War II. There were still 2066 guns of M1902 model available in 1941. The Soviet stockpiles of 76 mm ammunition for this gun were so large that the Soviet army decided to retain the 76 mm caliber ammunition for their modern field guns designed in the 1930s (F-22, USV and ZiS-3), even as other armies changed to