 He was arrested on Paul Giesler's orders in 1945, for being associated with the "Freiheitsaktion Bayern", an anti-Nazi group led by Rupprecht Gerngroß.However, Epp had not wanted to be directly involved with the group, as he considered their goal—surrender to the Allies—a form of backstabbing of the German Army.Suffering from a heart condition, he was hospitalised at Bad Nauheim at the end of the war.