A Hollywood blockbuster sparked an international diplomatic row over who actually cracked the Enigma.

Entertainment · Published 3 October 2026 Swipe more like this →

In short: The 2000 film U-571 was a box-office hit, but its fictional plot—depicting American sailors capturing a German Enigma machine—infuriated British officials. By replacing the real-life Royal Navy heroes with American ones, the movie triggered a formal protest in the House of Commons and a public rebuke from Prime Minister Tony Blair.

The film U-571 follows a fictional American crew tasked with stealing a German Enigma cipher machine during World War II. While the movie earned $127 million worldwide and an Academy Award for sound editing, its historical inaccuracies drew intense criticism. The actual capture of the first naval Enigma machine occurred on May 9, 1941, when the British Royal Navy seized U-110, seven months before the United States entered the war. By the time the US Navy captured U-505 in June 1944, Allied forces were already regularly deciphering German naval communications.

The controversy reached the highest levels of government. In June 2000, British MP Brian Jenkins labeled the film an affront to the memory of British sailors. Prime Minister Tony Blair agreed, emphasizing the sacrifices made by the Royal Navy. Even the film's screenwriter, David Ayer, later expressed regret, admitting that the decision to rewrite history was a mercenary move intended to appeal to American audiences. He noted that he would be personally offended if someone distorted the wartime achievements of his own grandparents.

Beyond the central plot, the film contains numerous technical and historical errors. The real U-571 was never captured; it was sunk in January 1944 by an Australian flying boat, with all hands lost to hypothermia. Furthermore, the film depicts German U-boats attacking survivors of sunken ships, a practice that was extremely rare. In reality, German crews often provided aid to survivors until the 1942 Laconia Order restricted such actions. The film also features inaccurate depictions of submarine technology, such as the use of audible sonar pings and the presence of torpedo tubes on resupply vessels that were never equipped with them.

Despite these flaws, some experts acknowledged the film's role in popularizing the subject. Sub Lieutenant David Balme, who led the actual boarding party on U-110, called it a great film, suggesting that the Americanized narrative was necessary for its financial success. Ultimately, the film serves as a case study in the tension between historical truth and the demands of commercial cinema, leading to its inclusion on lists of the most historically inaccurate movies ever made.

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