I am looking for the title of a WW2 movie that came out in 50/60's in color. Mostly remember the ending. A group of Nazis and their wives/girlfriends are at a fancy party. The Allies fire bomb the building where the party is taking place. Remember partygoers rushing to find a way out but too much smoke. A burning bridge? The Allies have backed the group into a corner. Staged an ambush. Believe not many survived on both sides. I asked my father, a lover of old movies, and he thinks it's "The Bridge on the River Kwai" but I think he is wrong.