An oval a full mile and a quarter in circumfrence, infield thick with dark grass, surrounded by white fences and stands enough to seat two thousand spectators. The smell of hay, horse sweat, and excitement is strong in the air…
From an episode of Justice League Unlimited:
The God of War creates a giant, unstoppable robot (golem, animated armor, etc.) as a weapon for one side in a civil war; his purpose is to prolong the war and create suffering and war among humanity.
Quote from Ares in that episode, which would go well with this idea: "That's all you mortals are good for! To fight and fight and fight until there is nothing left but charred land and blood and bones, and to end it all and then start again with the next generation!"