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Factual error: The film is set up until the USA enter the war, which was April 1917. The Germans always appear flying Fokker Dr.I triplanes, which flew for the first time in August and only appeared in any significant numbers over the front in November. Granted, the triplanes were a great way of letting the audience know who were the good and bad guys when so many similar-looking aircraft were together in the sky at the same time and in such haste.
Other: In one of the air battles, the one where our heroes come to aid to a platoon of infantry harassed by German Fokker D.I's, the plane of Lowry is under fire after he downed an enemy airplane. In one shot, you can see he gets multiple hits just behind the pilot seat. Since these planes are barely armoured, say not at all, Lowry should have been punctured by the bullets at his back as well, instead of being completely fine.






