in the Spring of 2014, in the fights at Harasta, Rif Dimashq Governorate. The purpose of these vehicles probably has changed to ground support only. Yugoslavia ZSU-57-2s saw service during the Yugoslav Wars, usually in light batteries used by Serbs and Montenegrins of the JNA for attacking ground targets. They were used during the war of independence when Croatian forces captured two ZSU-57-2s from the JNA. They were also used in the air defence role in 1999 during the NATO air raids against Yugoslavia when the Yugoslavs operated 54 of these vehicles. Combat history 1959–75 Vietnam War (North Vietnam) 1967 Six-Day War (Egypt) 1973 Yom Kippur War (Egypt and Syria) 1975–2002 Angolan Civil War 1979 Sino-Vietnamese War (Vietnam) 1980–1988 Iran–Iraq War (Iran and Iraq) 1982 Lebanon War (Syria) 1990–91 First Persian Gulf War (Iraq) 1991–2001 Yugoslav wars 1991 Ten-Day War 1991–95 Croatian War of Independence 1992–95 Bosnian War 1995–96 NATO bombing of Republika Srpska 1996–99 Kosovo War 1999 NATO bombing of the Federal Republic of Yugoslavia 2003 – Second Persian Gulf War 2003 Invasion of Iraq 2011 Syrian Civil War Variants Former USSR ZSU-57-2 prototype was based on a modified T-54 tank chassis equipped with experimental tracks. Unlike the production ZSU-57-2, the prototype weighted 26.172 tonnes, carried only 252 rounds: 172 rounds in clips inside the turret and 80 separate rounds in the nose part of the hull in a special ammunition stowage, had thinner armour (8–10 mm) and antennae mounted at the rear of the turret upper right side instead of in the middle. The first vehicle was built in June 1950, the second in December 1950. ZSU-57-2 improved prototype with an increased ammunition load of 300 rounds. Six were built between 1951 and 1953 for service tests. ZSU-57-2 – SPAAG mass-produced between 1957 and 1960. ZSU-57-2 armed with modernised twin S-68A autocannon. Like the original ZSU-57-2, it officially entered service with the Soviet Army in 1955. ZSU-57-2 converted into a bulldozer. After ZSU-57-2 SPAAGs were removed from AA units at the beginning of the 1970s, army workshops converted a number into bulldozers. The turret was replaced by a steel closed superstructure. The vehicle was equipped with the BTS-55 bulldozer blade. The People's Republic of China Type 80 (WZ305) – Chinese SPAAG. It has the same turret as the ZSU-57-2, but it is armed with the Type 59 twin anti-aircraft autocannon (a copy of the Soviet S-68), mounted on