Achilles returned to troy after he dragged Patroclus's body back to the battlefield he died into.

Achilles could yet not handle it, but Peleus forced him to do so, ordering him to move on from Patroclus's cursed death. Achilles screamed, fought, cursed, but nothing bought Patroclus back.

And nothing ever would.

He left his tent after days on it - the servants got rid of the awful smell of Patroclus's body -, just because he needed to leave the camp. The war was over. They lost.

Achilles looked around - the soldiers unmaking their tents, the servants putting the belongings of their masters onto carruages, and the horsekeepers putting the horses onto the frontline. Some healers were staying with soldiers that were too hurt to travel, yet the camp was almost totally empty.

Achilles ignored one of the servants that wanted to follow him to his carriage. He went by himself, seeing Peleus getting on it. Achilles had to fight the urge to run to the battlefield and say goodbye to Patroclus again, because he'd have to face the leaders, and the people.

And, gods, he didn't want that.