When "General Gibbs" is being hoisted back up from the elevator shaft covered in blood, there is a playing card stuck to his arm. This was due to the fact that this was a second take and the cards were all over the floor after "Lt. Colonel Baxter" flipped over the table. It should have been taken off before the second take.
General Gibbs' shirt while supposed to be blood stained appears more like just a completely pink shirt by the end of the movie.