From autumn 1943 onwards, the GMR took part in offensives launched by the Vichy government against maquis formations, with the consent of the Germans. They fought in the Massif Central and took part as an auxiliary force in the fighting against the Glières Maquis. During operations against the Maquis du Vercors, the GMR stationed themselves at the foot of the massif to prevent access. The main responsibility for larger-scale military actions fell on the German army with secondary participation by the Milice.