On the afternoon of May 9, 1940, at the resort town of Clervaux, in the forested north of Luxembourg, Camille Schneider entered the telephone booth outside the post office. An undercover representative of the French Secret Service, Schneider had tried in vain to reach his chief in Luxembourg's capital and was making a direct call to the next echelon, the regional intelligence center at Longwy, just over the border in France. Schneider's message was urgent. With his own eyes he had seen soldiers on the German side of the Sure River preparing pontoon bridges on which heavy vehicles could cross into Luxembourg.
- From Strange Victory: Hitler's Conquest of France by Ernest R. May