 Robert Mitchum (qv)s character was wounded and needed to use a  crutch, but Mitchum would switch which arm he used with the crutch  through out shooting. The continuity was so poor that Wayne (who  actually worked continuity in silents while a star college football  player, a method used by Hollywood fans to slip players some  spending money) had his character mention it in one of the last  scenes. The director enjoyed it so much he left it in the movie.