"the moment the American jumps over the barbed wire on his bike in The Great Escape"

The Great Escape is a 1963 war film that starred Steve McQueen, which is based on the true story of an escape from a German prisoner of war camp.  The scene referred to here is the most famous part of the film, in which McQueen, who performed his own motorcycle stunts, jumps over a fence on a motorbike.