About 40 minutes into the movie Lord Bredon remembers dancing with someone in a club during WWII when he notices the singer, Casey's mother. Behind her, on the stage, are three flags. The center is the British Union Jack. On the right is the American flag, and on the left is the Canadian present flag with the maple leaf. That maple leaf flag became official in 1965. Until then, it was the Union Jack. This is a very embarrassing mistake.