aircraft designs; the world's first aerial combat and kills between modern monoplane fighter would occur in the skies of China. In August 1937 Claire Lee Chennault accepted the offer to assume position as an "air combat adviser" of Chiang Kai-shek, and to train new fighter pilots at the Republic of China Air Force Academy, which was forced to move from the Jianqiao to the Wujiaba Aerodrome due to the war situation. On 14 August 1937 the Chinese Air Force fighter squadrons sortied for the defense of Shanghai and Nanjing, capital of the Republic of China. In the afternoon of 14 August 1937, two groups of nine Japanese Mitsubishi G3M long-range bombers were launched from Japanese-occupied Taiwan on a mission to bomb Jianqiao Airfield in Hangzhou, Zhejiang, and Guangde Airfield in Anhui. The 21st and 23rd Squadrons, led by Kao Chih-hang, the Group Commander of the Chinese 4th Pursuit Group, took off from Jianqiao Airfield to intercept the Japanese bombers, despite the fact that some of the fighters had just flown in from Zhoukou and had not been refueled. Kao attacked a G3M bomber and scored a direct hit sending it plummeting to the ground in flames, and he also damaged another G3M bomber; it was the first air-to-air victory for the Chinese Air Force. Meanwhile, three other Hawk IIIs attacked a third G3M bomber and shot it down. The second group of Japanese G3M bombers attacking Guangde Airfield was intercepted by the 22nd Squadron of the 4th Pursuit Group and the 34th Squadron. Squadron Commander Cheng Hsiao-yu of the 22nd Squadron shot up the right engine and the wing fuel tank of one G3M bomber, forcing it to ditch before returning to its air base. The aerial battles in the afternoon of 14 August were a resounding victory for the Chinese Air Force, in which the Chinese Hawk III fighters destroyed four Japanese G3M long-range bombers without losing a single plane to the Japanese. In addition, two G3Ms were also shot down by ground anti-aircraft fire. On the following day at dawn 15 August, 12 Japanese Type 89 torpedo bombers were intercepted over Hangzhou by 21 Hawk IIIs of the Chinese 4th Pursuit Group led by Group Commander Kao Chi-hang. The Chinese shot down eight bombers. In the afternoon 20 Japanese G3M bombers on a raid to Nanjing were intercepted by 26 Chinese fighters from the 8th, 17th, 28th and