It's time for the guys to take opposing sides once again as they each pick what they think to be the most pivotal battle in history. Their choices might surprise you - and their choices certainly surprise each other.
Will Jem be able to convince Greg with his arguments? Will Greg ever pronounce the name of the battle he has chosen correctly? And will one of the two allow themselves a rare moment of humility and allow the other to claim victory?
Let us know your thoughts on the battles at @condensedhist and @historygems