The Red Beret(1953)

Steve MacKendrick resigns from the US Army after causing the needless death of a fellow officer. Wanting to serve in the war, he enlists as a Canadian in the British 1st Parachute Brigade. He proves himself exceptionally skilled for a recruit, arousing the suspicion of his commanding officer who starts an investigation. He redeems himself during combat. The film was titled "Paratrooper" in the US.