Decker looks out the window of the general's office to see a 1959 jet aircraft pass on the airfield, however other shots in the same office show the window overlooks a parking lot with palm trees and cars.
After punching, and knocking out Major Wilson, Wilson's cap is lying on the table, near the door. Lt. Decker decks the sentry, then escapes. Recovering from the attack, Wilson grabs his cap, which is now in the center of the table.
When Decker gets back in his plane and starts taxiing, he is not wearing goggles. When the camera changes angles to the front view, he now has goggles on.
When Decker first gets out of his plane, Maj Wilson begins to question him. Decker's hair is neatly combed. When Wilson asks him "Are you French?" the shot changes to a closeup of Decker only. His hair is now disheveled in the front and hanging down on his forehead. The next shot returns to the wider angle and Decker's hair is more neatly combed again, as it originally was, not hanging on his forehead.
When Decker first exits the aircraft, there is a jeep immediately behind it, a service truck behind the jeep, and a USAF F-100 Super Sabre jet in the background. However, when Maj Wilson escorts him away from the plane, the service truck is gone and the F-100 has been replaced with a large transport aircraft.
Military officers do not render a hand salute when they are uncovered (without a hat). In this production not only does an officer without a hat salute a superior, but the other officers are wearing hats indoors, something that's not supposed to be done.
When the Air Vice Marshall enters the room, they render a hand salute. The correct action is when a superior officer enters the room, you come to attention.
French WW1 fighter pilot Georges Guynemer is said to have vanished fate unknown during a flight. Although he did initially vanish, his death was soon confirmed by German soldiers, and that information was accepted and not classified by the French government and so was soon made public.
When Decker arrives at the Lafayette Air Base, he is told that he is in an American base. When he sees the 1959 aircraft for the first time, he says, "We had no idea you were so advanced!" However, he should be surprised that there is an American base in France at all as the United States did not declare war on Germany until April 6, 1917, one month after Decker's departure.
Decker speaks of Georges Guynemer's disappearance. For Decker the date is March 5, 1917, but Guynemer disappeared on September 11, 1917.
Decker is flying a Nieuport 28, which entered service in early 1918. However, the date is supposed to be March 5, 1917. Furthermore, the Nieuport was a French-built aircraft that was flown by the French and Americans but not the Royal Flying Corps.
When Maj. Wilson enters the interrogation room he incorrectly addresses Lt. Decker by the American pronunciation of the rank, "Lootenant." Earlier they had used the correct British pronunciation of "Leftenant."