Lt. Fred Fox was an officer in The 23rd Headquarters Special Troops, also known as the Ghost Army. This deception unit used inflatable tanks, sound effects and fake radio transmissions to fool the Germans on the battlefields of Europe. Here's an excerpt from an article about Fox I wrote for The Princeton Alumni Weekly.

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D-Day found Fred Fox aboard the troopship John S. Mosby under bombardment from German shore batteries, waiting to go ashore with a 24-man radio platoon. Their job was to pretend they were three regiments from the 9thInfantry Division in order dissuade the Germans from counterattacking paratroopers of the 82nd Airborne who had landed inland. The plan fell apart in the confusion of the invasion, and they ended up being attached to the 82nd for several weeks. It wasn’t until the end of June that the rest of the deception unit came ashore, and they were all united. 
While working with the 82nd Airborne in the early Normandy,  Fox was profoundly disturbed by some of the things he saw. “The company was too rough for me” he wrote home. “I did get some more strong anti-war material –especially from boys who had just killed Germans or were just going out to kill some more." @font-face { font-family: "ＭＳ 明朝"; }@font-face { font-family: "Cambria Math"; }@font-face { font-family: "Cambria"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Cambria; }span.MsoEndnoteReference { vertical-align: super; }p.MsoEndnoteText, li.MsoEndnoteText, div.MsoEndnoteText { margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Cambria; }span.EndnoteTextChar { }.MsoChpDefault { font-family: Cambria; }div.WordSection1 { page: WordSection1; } On June 10, 1944, he was reading in his jeep, waiting for the troops to move out when he smelled a pot of coffee being brewed by some paratroopers. He headed over to see if he could get some. Then he noticed two American soldiers working over a smoldering staff car with the bodies of two German officers inside. The paratroopers were using their commando knives to gouge gold fillings out of the corpses teeth.
That was the moment he decided to become a minister. Years later he wrote about the meaning it held for him.  “There is hope for the world if Churchmen would leave their storybooks and climb out of their jeeps. Fires have to be put out and men—even enemies—treated as human beings.”
After the war, Fox became an ordained minister.  He also wrote freelance articles for The New York Times, an aide to President Eisenhower, and Recording Secretary at Princeton University. He died in 1981.