Hashirama was standing on the battlefield, most likely thinking of a plan.

It was the middle of war and Hashirama was on your side. After you were brought back along with him and the other kages you were destined to fight along side the new generation of Shinobi to help defeat an old enemy.

You used to be Hashirama's advisor when he was kage but before he passed you guys got into an argument which was never resolved.