Most maquisards operated in the remote or mountainous areas of Brittany and southern France, especially in the Alps and in Limousin. They relied on guerrilla tactics to harass the Milice and German occupation troops. The Maquis also aided the escape of downed Allied airmen, Jews and others pursued by the Vichy and German authorities. Maquisards usually relied on some degree of sympathy or cooperation from the local populace. In March 1944, the German army began a terror campaign throughout France. This included reprisals against civilians living in areas where the French resistance was active, such as the Oradour-sur-Glane, Maillé and Tulle massacres by SS troops. The Maquisards were later to take their revenge in the "épuration sauvage" that took place after the war's end.