Theirs Is the Glory (also known as Men of Arnhem), is a 1946 British war film about the British 1st Airborne Division's involvement in the Battle of Arnhem (17 to 25 September 1944) during Operation Market Garden in the Second World War. It was the first film to be made about this battle, and the biggest grossing UK war film for nearly a decade. The later film A Bridge Too Far depicts the operation as a whole and includes the British, Polish and American Airborne forces, while Theirs Is the Glory focuses solely on the British forces, and their fight at Oosterbeek and Arnhem.

The film was directed by Brian Desmond Hurst, who was himself a veteran of the First World War, having survived Gallipoli where he had served with the Royal Irish Rifles. The producer was Leonard Castleton Knight, head of Gaumont British News. The script was written primarily by Louis Golding but honed by Hurst's protege Terence Young (who subsequently went on to direct They Were Not Divided and the early Bond films). Young had been in the Irish Guards with the Guards Armoured Division with XXX Corps seeking to relieve Arnhem during the battle and hence the authenticity of the eventual story-line. The veterans who starred in the film also actively collaborated on the script.