During the Occupation, the completed "ouvrages" had been provided with caretakers and were kept in good condition. With the Normandy landings, the French Resistance was instructed to impede German reinforcements from reaching northwest France by sabotaging the choke points through the Alps. The Petit Saint-Bernard, the Mont-Cenis and the Col de Larche were to be blocked. On 15 August 1944, the Operation Dragoon landings were accomplished by the Allies against light opposition. Briançon, which had been occupied by the German 5th "Gebirgsjäger" Division, was evacuated on 24 August and occupied by Resistance forces. However, the Germans remained in the surrounding fortresses, and the 90th Panzergrenadier Division mounted an unsuccessful counterattack against American patrols and French forces, operating from the Fort du Randouillet. The newly arrived 4th RTM and 3rd Moroccan under Colonel Molle mounted an offensive to drive the Germans over the Col du Montgenèvre starting on 4 September, and taking Gondran, Infernet, Croix-de-Bretagne, Chenaillet and Janus the same day. Randouillet and the Fort des Têtes were captured on the 6th, but German forces on the crest of the Col du Montgenèvre continued to fire into Briançon. The area around Les Fourches and Restfond was captured by French and American forces in late September, but was evacuated for the winter in October. The reactivated Fort Chaberton continued to fire on Briançon until it was captured in April 1945. Roche-la-Croix was captured by a new offensive on 22 April 1945. The next day Saint-Ours Haut and Bas were captured.