At the Y in the road.

A large boulder with a plaque attached to the front.

The memorial remembers the French Resistance and OSS Operation to sabotage an enemy train on August 19, 1944.  The mission was a success with one French  Maquisard killed in action.

From the OSS Society Facbook page: 

A ceremony was held Cap au Vent, France, the site of the derailment of the 44-carriage German train seeking to retreat from Mazamet to Castres, carrying weapons, munitions, soldiers and loot. It was derailed by the expert explosives skills of OSS Operational Group PATs Captain, 22-year-old Conrad Lagueux.

A long firefight ensued, ending when the local Resistance fired a mortar that hit the heavily-loaded train. The Germans eventually surrendered. Sixty were taken prisoner. One member of the maquis was killed and is remembered in this ceremony.

The text on the plaque is in French and reads:

ICI, DANS LA NUIT DU 19 AOÛT 1944
LES MAQUISARDS DU GROUPEMENT DE SEGONZAC ET LE COMMANDO AMÉRICAIN DESCENDUS DE LEUR MONTAGNE, ONT CAPTURÉ UN TRAIN ARMÉ ET FAIT 60 PRISONNIERS.
ICI, EST MORT POUR LA FRANCE LUCIEN RULAUD

The English Translation:

HERE, ON THE NIGHT OF AUGUST 19, 1944
THE MAQUISARDS SEGONZAC GROUP AND THE AMERICAN COMMANDOS, DESCENDING FROM THEIR MOUNTAIN, CAPTURED AN ARMED TRAIN AND TOOK 60 PRISONERS.
HERE, LUCIEN RULAUD DIED FOR FRANCE