victories (former Guangxi-Bai Chongxi/Li Zongren warlord air force pilot) Cen Zeliu (岑泽鎏 - Shim Tsak-lai, Sh'en Tse-liu): 5+ victories (former Guangdong-Chen Jitang warlord air force pilot) Louie Yim-Qun (雷炎均): 3-5 victories (American-born Chinese air force volunteer) Teng Li-Chun 2.5 victories, He flew 60 combat missions during WWII as a member of the Chinese-American Composite Wing (Provisional) in the 1st Wing of the 14th Air Force. He flew another 220 combat missions against the communist Chinese. He retired as a Colonel in the Republic of China Air Force with 18 Chinese military decorations and the Air Medal from the United States. R.O.C. commissioned pilots : 11-1/3 (9 confirmed according to Republic of China records) Wang Kuang-Fu (王光復): 8 Gao Youxin: 8 Yuan Baokang (袁葆康): 8 victories : 7+ Tsang Shi-Lan (臧錫蘭): 7 Tan Kun (譚鯤): 5 or 6 Yue Yiqin (樂以琴): 5 : 5 : 5 Lo Ying-Te (羅英德): 5 Leng Pei-Su (冷培澍): 5 Chow Ting-Fong (周廷芳): 6 Lu Ji-Chun(呂基純): 5 : 5 Foreign aid Soviet Union From 1937 to the beginning of 1941, the Soviet Union served as the primary supplier to the ROCAF, and from October 1937 to January 1941, a total of 848 aircraft in 13 batches were ordered by the Chinese government and were supplied on credit, worth roughly 200 million dollars. In addition, there were 37 aircraft transferred to Chinese when Soviet force withdrew from China after the signing of Soviet–German Non-Aggression Pact. These aircraft included 563 fighters, including 252 I-152, 75 I-153, 132 I-16 Type 5, 75 I-16 Type 10, 10 I-16 Type 17 and rest being I-15 bis, which was not part of the purchase in the 13 batches. Also included were 322 bombers, including 179 SB-2M-100A, 100 SB-2M-103 24 DB-3, 6 TB-3 and 13 SB that were not part of the purchase in the 13 batches). Also included in the 13-batch purchase were 5 UT-1 trainers. However, of the 250–300 combat aircraft supplied annually, only a few dozen would survive through the end of the year. United States While the USSR provided most of the military aircraft to Chiang Kai-shek in the late 1930s, many early Chinese aircraft were supplied by the American Curtiss Aeroplane and Motor Company. In 1937 the Hawk II and Hawk III biplanes comprised the backbone of Chinese fighter aviation. These were soon followed by the Hawk 75 monoplane. The demonstration model Hawk 75N, with non-retractable landing gear was