- Joseph Fiennes lost 20 pounds to star in the film.
- At the time of filming, the prototype of Captain Prince in the film was still alive, so James Franco met with the Prince who lived in Seattle and watched documentaries and interview videos from the 1940s.
- The filming of the film took a total of four months, and the rescue battle scene was filmed for a month and a half. In order to achieve the physical and mental appearance of a World War II officer, the crew hired a Vietnam War veteran for Benjamin Bratt and James Frank to be responsible for special training. , learn how to plan battles and give orders.
- On the eve of the filming, James Frank specially watched the 6-hour live-action interview video filmed by the director for Captain Prince, in order to try to figure out the character prototype's speech, demeanor and mentality when performing the rescue mission, so as to faithfully reproduce the heroic deeds of historical figures.
The Great Raid behind the scenes gags
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[Japanese have just fired mortar shells at the escaping troops and POW's]
Captain Prince: Get a base of fire on the *Son of a bitch*!
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[last lines]
Captain Prince: Never in our history have such a large group of men endured so much and complained so little. Many couldn't shake the fact that their country had abandoned them, left them to die in a foreign land. It was said to be of no significance to the war effort, but for me, it meant everything. It's true, they had been left behind, but never forgotten.