You're kidding Cliffy! I'm not going through your whole list but with Japan for starters you may have forgotten the little incident at Hiroshima, Dec. 7 1941. It was only after the bomb was dropped on Nagasaki that the Japs surrendered and then there was the Jap P.O.W. camps. Need I go on?
P.S. Nagasaki was bombed Aug.8/45, Japan surrendered Aug. 15/45. Some interesting reading includes...........................10 Japanese Atrocities From World War II - Listverse
As far as Vietnam goes Cliffy, Kennedy went to aid of S. Vietnam 7 years after the war already started.
Battlefield:Vietnam | Timeline
Ooooops I'm going brain dead............................Pearl Harbor Dec. 7 1941!