The first scene that Carl Malden is in, where Patton has just taken command of the United States troops in North Africa. Patton and Bradley are in a second story office where they are talking about Patton's promotion from a two star general to a three.
Patton gets up to prepare to go review the troops while talking with Bradley at the same time. He puts a 1903 Colt pistol into his belt, walks to the window to look out while talking. When he turns around to put on his jacket, the pistol has vanished! Maybe it slipped down his pant leg?