When Captain Courtney is rescued, he jumps on the wing and hangs onto the strut.
When the actual aircraft takes off, the dummy used is much further forward on the wing than Captain Courtney was.
In the beginning the planes shown landing and the planes that taxi up to the hangers are different.
The amount of engine oil on Flynn's face.
The opening shot identifies the time as 1915.
From the first, the song played over and over on the phonograph is "Poor Butterfly.
" Sources seem to agree that this song was not published until 1916, and not recorded until later still.
(at around 1 min) Phipps is writing a letter of condolence to the mother of a recruit who has been killed in action.
As he stops writing to talk with Major Brand, he switches his pen from his right hand to his left hand and removes his glasses with his right hand.
In the next shot, his pen is back in his right hand and his glasses are in his left hand.
The amount of oil and dirt on Courtney's face changes several times between scenes.
The most obvious is when he goes up stairs to console another pilot who has lost a friend.
As he goes up his face is slightly dirty, as he enters the room it is noticeably dirtier and when he comes back down it is much cleaner.
