Who's Singin' Over There?

On April 5th, 1941, a day before the Nazi attack on the Kingdom of Yugoslavia, a colorful group of passengers is headed for Belgrade... On April 5th, 1941, a day before the Nazi attack on the Kingdom of Yugoslavia, a colorful group of passengers is headed for Belgrade... On April 5th, 1941, a day before the Nazi attack on the Kingdom of Yugoslavia, a colorful group of passengers is headed for Belgrade... On April 5th, 1941, a day before the Nazi attack on the Kingdom of Yugoslavia, a colorful group of passengers is headed for Belgrade...