Okay, here are a few:



These were issued in 1943 by the Naval Civil Administration and were used in the areas of the Dutch East Indies that were controlled by the IJN.



The top four are Manchukuo (the Japanese puppet state in Manchuria) stamps and celebrate the construction of the national capitol. The lower three are stamps of Manchukuo overprinted with the words "Republic of China" after the war.



These are Japanese definitive stamps overprinted by the American military in early 1946 for use in Korea.