From Tom Lehrer's introduction to So Long, Mom, 1964/5:

"This year we've been celebrating the hundredth anniversary of the Civil War and the fiftieth anniversary of the beginning of World War I and the twentieth anniversary of the end of World War II. So all in all, it's been a good year for the war buffs. And a number of LPs and television specials have come out capitalizing on all this "nostalgia", with particular emphasis on the songs of the various wars.

"I feel that if any songs are gonna come out of World War III, we'd better start writing them now. I have one here. Might call it a bit of pre-nostalgia.

"This is the song that some of the boys sang as they went bravely off to World War III:"

Ah! 50th anniversary of the That Was The Year That Was album!