Editing Polikarpov I-15 (section)

===China===
In August 1937, the Chinese [[Kuomintang]] Government signed a non-aggression pact with the USSR, and in autumn of the same year, the Soviet Union commenced to ship I-15s as a part of a programme of military aid to the [[Republic of China Air Force|Chinese Air Force]] (CAF) in its defensive war against Japan. More than 250 Soviet pilots volunteered to fly the 255 I-15s supplied to China in autumn 1937. By 1939, the total number of Polikarpov biplanes delivered to CAF reached 347 I-15/I-15bis.<ref name="Maslov p. 33">Maslov 2010, p. 33.</ref> The I-15bis also saw a great amount of action in the [[Soviet–Japanese border conflicts]] along the [[China–Mongolia border]]. From 1938 to 1941, I-15s in the [[Development of Chinese Nationalist air force (1937–1945)|Nationalist Air Force of China]], fought many major battles, and skirmishes against invading and occupying Japanese forces, including the [[Battle of Taierzhuang]], the [[Battle of Wuhan]], the [[Battle of South Guangxi]], the [[Bombing of Chongqing|Battle of Chongqing-Chengdu]], etc. The tough [[biplane]] was quite clearly outmatched during the debut dogfight against the new [[Mitsubishi A6M Zero]] fighter over [[Chongqing]] on 13 September 1940, although I-15bis pilots Maj. [[Zheng Shaoyu]], Lt. [[Gao Youxin]], and Lt. Xu Jixiang were able to target and damage some of the Zeroes, with Lt. Gao believing he had shot one down (all Zeroes returned to base in [[Wuhan]], with four Zeroes suffering some damage); all three of those pilots survived the battle.<ref>Cheung, 2015, pp. 74-75. Lt. Gao had shot A6M Zeroes of the tails of other Chinese fighters in the melee over Chongqing on 13 September 1940, closing in to 160 ft of one... claiming one shot down...</ref><ref>{{Cite web|last=Chen|first=C. Peter|title=Gao Youxin|url=https://ww2db.com/person_bio.php?person_id=965|access-date=2020-11-27|website=WW2DB|quote=<In Sep 1940 (9/13/1940), Lt. Gao Youxin flew against the new A6M Zero fighters, damaging one... he had claimed a victory but no A6M fighters were lost in that action.}}</ref><ref>{{Cite web|last=萨沙|first=资深中国近代军事历史作家|date=2019-05-09|title=永不归航的红色年轻战鹰：1位"八路军"青年战士的抗日空战|url=https://zhuanlan.zhihu.com/p/65241552|archive-url=|archive-date=|access-date=2020-12-21|website=知乎专栏|language=zh|quote=<郑少愚在此战中第五次受伤，他的右手和左足均中弹负伤，座机更被击成重伤。他虽然受伤，但依旧表现英勇。根据《空军第一路司令官毛邦初关于敌我空军交战情况的战斗要报》（1940年9月13日）中记载：“总领队郑大队长虽手足均受弹伤，但仍奋勇迎敌，援救友机多架，战斗终结，掩护各机飞返遂宁。}}</ref>

Pilot Captain Shen Tse-Liu is credited with 4 victories in his I-15bis, the most with the aircraft in the war.<ref>{{Cite web |title=Chinese biplane fighter aces - Shen Tse-Liu |url=http://surfcity.kund.dalnet.se/china_tse-liu.htm |access-date=2024-06-17 |website=surfcity.kund.dalnet.se}}</ref>