What a cracking programme! I knew about the truce from things like Paul McCartney's 'Pipes Of Peace', and the Blackadder Goes Forth episode 'Goodbyeeee', but I didn't know the factual details.
In a weird way, I really wish I'd been there... the atmosphere must have been really amazing! As Edmund Blackadder said himself, 'Both sides advanced more during one Christmas piss-up than they managed in the next two-and-a-half years of war.'
Neither side wanted to be at war but, as one soldier said, "... it was what we were ordered to do."