Editing Polikarpov I-15 (section)

===Mongolia===
In 1939 Polikarpov fighters were extensively used during the [[Battles of Khalkhin Gol]] fought around the [[Khalkha River]] in [[Dornod Province]]. The battles were fought during 11 May–16 September 1939, and involved more than 600 planes. When hostilities commenced, the only I-15bis in the area were 14 aircraft of 70th IAP. Their number increased in the following weeks: on 23 May, 35 I-15bis from 22nd IAP arrived from the Trans-Baikal region.<ref name="Smith" /> However the Mongolian Polikarpov pilots had been hastily trained and they suffered heavy losses against the more experienced Japanese pilots. During this conflict, the Soviet Union, Mongolia and Japan lost more than 200 aircraft each.<ref name="Maslov p. 42">Maslov 2010, p. 42.</ref> 10 aircraft were delivered to the [[Mongolian People's Army|Mongolian People's Army Air Force]] in mid-July 1939 and flight personnel were trained for [[Rear (military)|rear]] air defence. Afterwards, they received more than 30 aircraft in March 1942.{{Citation needed|date=January 2021}}