Once victory is achieved on a board, there is no more combat movement or resolve combat on that board. The victor keeps control and remains getting IPC’s for all territories gained. He also regains control for territories he owned at the beginning OF THE GAME. Also you may now non combat move into enemy owned territories and sea zones leaving mixed forces, for example if Japan won the Pacific game a American battleship and Japanese battleship may share a sea zone and do not ever resolve combat. You cannot non-combat move onto an enemy capital after a game is completed for that board. Example, Japan cannot drop of troops on United States or New South Wales. However if you took the enemy capital to win the game you keep control of it and the original owner and his allies may not non-combat move into it.