On 27 June the Japanese Army Air Force's 2nd Air Brigade struck the Soviet airbase at Tamsak-Bulak in Mongolia. The Japanese won this engagement, but the strike had been ordered by the Kwantung Army without obtaining permission from Imperial Japanese Army (IJA) headquarters in Tokyo. In an effort to prevent the incident from escalating, Tokyo promptly ordered the JAAF not to conduct any more air-strikes against Soviet airbases.
