The Liberation of Korea as a USSA Ally greatly annoyed the ruling clique in Moscow ( Something that would become eveident later) and Stalin, fearing a USSA-controlled China would be an excellent counterweight to his own ambitions in Asia ordered preparations to be made for an Intervention against the Japanese. This however was not known to USSA authorities until much later. Of a more pressing issue was to eject the Japanese from Manchuria. The no one, including JAPFoS and the President
(AN: = me o ) was looking forward to a slogging match through central China. The Warplan was to push inland until the puppet Manchukuo could be annexed, and then try to capture the remainder of the Chinese coast, thereby establishing a land-connection with the holdings in the south. Then the main focus would shift towards clearing the Japanese holdouts in the Pacific, hopefully forcing a Japanese surrender before the Soviets attacked.
The hopefully second to last great offensive on the Asian Mainland was launched on October the 1st, calculating correctly that the Japanese puppet Munchurian Infantry would be more gravely hampered by the weather and the terrain than the crack APA Mountaineers that made up the first wave of the assault. Progress was surprisingly quick and on November 1st Comrade General Pattons tanks were on the outskirts of the Industrial centre of Harbin, acting as the Manchurain Capital, capturing it and the end of the same day.
In the face of stiffening Japanese/Manchurian resistance and the quickly worsening weather the JAPFoS considered halting the general advance, a thought reinforced by the repeated failure to capture the last Manchurian strategic location at Changde, thereby forcing them to surrender, but Comrade General Pattons newly named commander of all ground forces in Asia, when asked for his opinion dismissed these thoughts as "rubbish"
(AN: Patton said something more jucy of course, but it has been tuned down to fit the younger audience. ) and pushed his men even harder, and so Comrade General Marshallsucceded in capturing Changde and with it "Emporer" Pu Yi on December 25th, formally annexing Manchuria and trapping a healthy portion of the Japanese Army behind the lines.
Pu Yi who was quickly shipped to America to be reindoctrinated was sentenced to 15 years of prison and rendocitrination for his service to the Japanese ( some also say for his tupidity ) and imprisoned at Fort Leavenworth, along with the surviving leaders of the CSA and CAL. After his release he returned to China were he became the Chief Ideologist.