Katamori was thought to be a man of influence of the shogunate's supporters and regarded with hostility; he resisted the army of the new government as a leader of the Ouetsu Reppan Domei in the Boshin War, fought at the Battle of Aizu, and according to the Advice of Capitulation, called on Kanbee SAGAWA to capitulate.
容保は幕府派の重鎮と見られて敵視され、戊辰戦争では奥羽越列藩同盟の中心として新政府軍に抗戦して会津戦争を行い篭城し、降伏勧告に応じて佐川官兵衛らに降伏を呼びかける。