Perhaps you recall the scene from the movie "Patton." General Patton was pacing back and forth on the balcony of an English mansion. General Eisenhower had him set up as commander of an entirely fictitious army, complete with fake air traffic. The Germans are fooled and do not rush to the defense of the beaches of Normandy, thinking that the real invasion will be at Calais, headed by Patton.
Of course Patton is extremely upset. He can't believe that he is being kept out of the most glorious war of the century. He says to a subordinate that he feels God has some great calling for him, some great army to move, but General Bradley, of all people, is in charge of the only army then going anywhere.