There's a Finnish soldier who served in the Finnish army and the German army during the war, and later served in the American Special Forces, earning him the Mannerheim Cross, the Iron Cross and an American Bronze Star. Not exactly what you are looking for but close enough.

http://en.wikipedia.org/wiki/Lauri_T%C3%B6rni

Here are some previous post by yours truly and /u/georgy_k_zhukov touching on both German and Japanese participation in the French Indochina War (1946-1954).