During WWII, the Office of Strategic Services conducted Operation Union II, involving the aerial insertion of six Marines, an Army Air Corps captain, and a French resistance fighter into the German-controlled French Alps in August of 1944. Their mission was to arm and train the French Resistance to aid in the fight to liberate Europe. When they found themselves surrounded by German forces in the village of Centron, the Marines surrendered in order to save the village from retaliation. Those same villages they fought in remember their legacy and sacrifice through a series of ceremonies.