Shan State Karenni State Phayap Army Kengtung Yunnan Burma
The Thais and Japanese agreed that the Burmese Shan State and Karenni State were to be under Thai control. The rest of Burma was to be under Japanese control. On 10 May 1942, the Thai Phayap Army entered Burma's eastern Shan State, which had been claimed by Siamese kingdoms. Three Thai infantry and one cavalry division, spearheaded by armoured reconnaissance groups and supported by the air force, engaged the retreating Chinese 93rd Division. Kengtung, the main objective, was captured on 27 May. Renewed offensives in June and November saw the Chinese retreat into Yunnan.
