Marinebrigade Ehrhardt
After the conflict, Killinger became politically oriented towards the far right. He soon became involved with the paramilitary anti-communist organization known as the "Freikorps", which was the conservative and nationalist reply to the German Revolution. He joined the "Marinebrigade Ehrhardt", a unit of the "Freikorps", and was commander of a storm company within the brigade. Killinger was in Munich during the bitter fighting between the "Freikorps" and the Communist Party-dominated Red Guards of the Bavarian Soviet Republic. He later indicated that, during the conflict, he had disfigured captured Red Guards and had ordered a female Communist sympathizer to be whipped "until no white spot was left on her backside".