Oh, there he goes off to his room to write that hit song "Alone in my principles."
Question #1721 posted on 12/02/2003 4:02 a.m.
Q:

Dear 100 Hour Board,

What single battle in world history involved the most nations? (And I mean the armies/soldiers were physically present at the battle)

- Patten

A: Dear Patten,
World War II. There are simply more nations now than there ever have been in the past, and almost all of them were involved in WW2. The battles were so chaotic that it'd be difficult to say who exactly fought in which battles, but it would definitely be a battle during this war.
-Thor