The Big Attack - Citizen Soldiers of WWII Season 1 Episode 5 The Mute

This is the true story of an American paratrooper rescued by the French underground in Normandy under the noses of German troops. Meet Glen Robinson, a U.S. Captain, underground members, including lovely Lucienne, the Mute himself "Gabby" Mosely. Nicknamed for his gift of gab, he assumes the identity of a deaf-mute to avoid capture and teams with Lucienne to sabotage enemy communications.