For those who don't know what this is about, the Allies needed diversions to make the Germans think D-Day would not be at Normandy. The Brits built a large number of balloons that looked like tanks, etc., and put them in locations that looked like logical staging areas. So when German bombers flew over those areas, they saw tanks, etc., and reported back to the German high command, which sent troops, etc., to the place that WOULD HAVE been attacked if that was a REAL staging area.
Also, one of the top U.S. generals had been removed from command. He was sent to that area so rumors would get back to Germany that he was there, since there WOULD be a top level general on the ground if it HAD been a real staging area.
