11 August 1945. In line with the Yalta Agreement but also as part of Soviet plans to invade Hokkaido, Soviet forces attack the Japanese colony of Karafuto (southern Sakhalin). Although outnumbered three to one, Japanese troops resist fiercely, disrupting Moscow’s overall strategy. The Soviet conquest of Karafuto is finally completed on the 25th.
11 August 1945. An amphibious force of naval infantry storms ashore at Yuki (Korean: Unggi) near the Soviet–Korean border. The port falls on the next day after Soviet land forces arrive. Two days later, an amphibious assault on the major port of Seisin (Ch’ŏngjin) meets fierce Japanese resistance. The eventual fall of Seisin on the 16th totally disrupts Japanese sea and ground communications with the Kwantung army in Manchuria.
11 August 1945. Soviet–MPR forces take Sunid and the palace of Prince Demchugdongrob (De Wang), ruler of the Japanese-supported ‘Mongolian Autonomous State’. At the time, Prince De is in his capital, Kalgan, but his family are captured and taken to Ulaanbaatar, where they are housed in comfortable quarters
11 August 1945. Cadets of the Hsingan Military Academy, an officer’s school in Wangin Sum (Wangyemiao) training Mongols in Manchukuo, are ordered to retreat to Baicheng to the south to prepare to fight against the Soviet–Mongolian Army. En route, they rebel and kill their Japanese instructors, reversing direction and joining the Soviet–Mongolian forces advancing from the north.
11 August 1945. The transfer of local government to Vietnamese imperial control in many cities in Tonkin and Annam, celebrated earlier in August with destruction of French colonial statues and renaming of streets, fails to quieten the growing unrest. Despite stern Japanese warnings against illegal political activities the previous day, fears of the imminent return of French colonial rule bring Dai Viet nationalists out onto the streets of Hanoi to oppose ‘imperialist invasion plots’. That evening, hearing news of a possible Japanese surrender and looking to pre-empt a Viet Minh takeover, their leaders hold an emergency meeting to discuss the seizure of power from imperial authorities in Hanoi with tacit Japanese support. Opinions are sharply divided; some want to take action immediately, others fear being seen by the Allies as Japanese collaborators. No decision is reached at the meeting.