The 4th Army was a field army of the Czechoslovak People's Army, active from 1958 to 1965 and 1969–1991. In its second formation its headquarters was in Pisek. The army was first formed from the 4th Rifle Corps on 15 July 1958. In the 1980s the force included the 2nd Motor Rifle Division, 15th Motor Rifle Division, 4th Tank Division and 9th Tank Division, as well as other subordinate units including 321st Army Missile Brigade. Structure 4th Army in Písek: 4th Headquarters Battalion in Písek 3rd Motor Rifle Division in Kroměříž (in case of full mobilization would have also formed the 26th Motor Rifle Division) 33rd Tank Regiment in Přáslavice 4th Motor Rifle Regiment in Hodonín with OT-64 wheeled armored transports vehicles 5th Motor Rifle Regiment in Mikulov with BVP-1 tracked infantry fighting vehicles 6th Motor Rifle Regiment in Uherské Hradiště with OT-64 wheeled armored transports vehicles 361st Artillery Regiment in Hranice 14th Separate Rocket Launcher Division in Přáslavice with 9K52 Luna-M artillery rocket systems 3rd Command and Artillery Reconnaissance Battery in Kroměříž 13th Anti-Aircraft Regiment in Bzenec 3rd Reconnaissance Battalion in Kroměříž 2nd Engineer Battalion in Břeclav 3rd Signal Battalion in Kroměříž 3rd Supply Battalion in Kroměříž 3rd Maintenance Battalion in Kroměříž 13th Chemical Defence Battalion in Bzenec 13th Medical Battalion 4th Tank Division in Havlíčkův Brod 7th Tank Regiment in Jindřichův Hradec 8th Tank Regiment in Jihlava 13th Tank Regiment in Čáslav 9th Motor Rifle Regiment in Znojmo with BVP-1 tracked infantry fighting vehicles 6th Artillery Regiment in Jemnice 4th Separate Rocket Launcher Division in Jemčina with 9K52 Luna-M artillery rocket systems 4th Command and Artillery Reconnaissance Battery in Havlíčkův Brod 4th Anti-Aircraft Missile Regiment in Bzenec with 2K12 Kub surface-to-air missile systems 4th Reconnaissance Battalion in Jindřichův Hradec 6th Engineer Battalion in Jindřichův Hradec 5th Signal Battalion in Havlíčkův Brod 4th Supply Battalion in Havlíčkův Brod 4th Maintenance Battalion in Jihlava 6th Chemical Defence Battalion in Havlíčkův Brod 6th Medical Battalion 9th Tank Division in Tábor 14th Tank Regiment in Písek 17th Tank Regiment in Týn nad Vltavou 18th Tank Regiment in Tábor 79th Motor Rifle Regiment in Benešov with BVP-1 tracked infantry fighting vehicles 362nd Artillery Regiment in Lešany 9th Separate Rocket Launcher Division in Jistebnice with OTR-21 Tochka tactical ballistic missiles 9th Command and Artillery Reconnaissance Battery in Jistebnice 9th Anti-Aircraft Missile Regiment in Strakonice with 2K12 Kub surface-to-air missile systems 9th Reconnaissance Battalion in