What was the first movie to ever use a Wilhelm Scream?

The first movie to ever use the Wilhelm Scream is "Distant Drums." This iconic sound effect, named after the character who first used it, Private Wilhelm, quickly gained popularity and became a staple in many movies afterwards. "Distant Drums" used the scream during a scene where a soldier is dragged underwater by an alligator, and this use marked the beginning of a long-standing tradition in the film industry.