of the extra units. Nevertheless, the TPDF retained a large amount of officers in the standing army, with the assumption that they could be used to command militiamen in the event they needed to be called back into service. The post-war size of the TPDF remained larger than the pre-war size throughout the next decade. In 1992, the IISS listed the army with 45,000 personnel (some 20,000 conscripts), 3 division headquarters, 8 infantry brigades, one tank brigade, two field artillery battalions, two Anti-aircraft artillery battalions (6 batteries), two mortar, two anti-tank battalions, one engineer regiment (battalion sized), and one surface-to-air missile battalion with SA-3 and SA-6. Equipment included 30 Chinese Type 59 and 32 T-54/55 main battle tanks. In 2007 Tanzania pledged forces for the SADC Standby Brigade of the African Standby Force. Land Force Command The Land force command was separated from the Army and an official commander was appointed to run the operations of the Land Forces. In 2013, the other separated half of the army was officially incorporated as a new branch of the military to oversee strategic planning and administration of all the branches of the military called the Defence Force HQ Command. , the army is gradually modernising and restructuring. Much of the inventory is in storage or unreliable. 5 × infantry brigades 1 × armoured brigade 3 × artillery battalions 2 × air defence artillery battalions 1 × mortar battalion 2 × anti-tank battalions 121st Engineer Regiment (battalion size; unit identification from usaraf.army.mil and Flickr) 1 × central logistic/support group Equipment Air Force Command Tanzania established its air force as the "Air Wing" (Kiswahili: Usafirishaji wa Anga) of the TPDF Air Defence Command in 1965. As it was following an international policy of non-alignment, Tanzania procured aircraft and trainers from a variety of countries, most notably China, Canada, and the Soviet Union. By 1978, the Tanzanian Air Wing possessed 14 MiG-21MFs, two MiG-21UMs, 22 Shenyang J-5s (F-5), 12 Shenyang J-6s (F-6), as well as several transport and trainer aircraft. Furthermore, the country's Air Defence had access to SA-3 surface-to-air missiles, SA-7 MANPADS, 14.5mm and 36mm or 37mm anti-aircraft guns, and ground support equipment—including early-warning radars. The Air Wing was eventually organised into three Kikosi cha Jeshi or KJ Brigades, with each brigade focusing on one particular element of air warfare: aircraft and helicopters (601 KJ), technical support (602 KJ), and air defence (603 KJ).