Henry Wallace stays on as Vice President for the 1944 election, and would succeed FDR after his death in 1945. President Wallace oversaw the end of World War II in Europe, with the surrender of Nazi Germany, and would also oversee Operation Downfall
, the land invasion of the Japanese Home Islands. America and the Allies emerged victorious from Downfall, but millions of American soldiers would have gone down whilst fighting in Japan.
After the war, Wallace took a lowkey approach in the European occupation, maintaining a positive attitude towards the Soviets, and allowing for millions in US aid to be given to the rebuilding countries of Europe. Critics of Wallace today like to point out his lowkey approach, stating that 'he had gifted the Soviets many new puppet states to enforce communism upon.' Prime examples include Italy; which devolved into a civil war, eventually splitting North-South, with a communist north and a capitalist south. States such as Piedmont and Venice would also emerge from the civil war; and Turkey, which would also enter a civil war, and would become a Soviet puppet after losing lands to Greece and being somewhat partitioned by the communists into other countries.
Henry Wallace would lose his re-election bid to Governor Thomas E. Dewey in 1948, who now has to deal with communist intervention in Berlin, and the looming communist presence within North Korea and socialist Hokkaido.
(idk i might continue this into a real timeline soon)