Operation Mincemeat review – Colin Firth leads a starry wartime spy drama

In 1943, British intelligence devised one of the strangest deception operations of the Second World War. The plan was to convince Nazi Germany that the Allies intended to invade Greece and Sardinia, while the real target was Sicily.

At the centre of the elaborate ruse was the body of a homeless man, dressed as the fictional “Capt William Martin”. British intelligence equipped the corpse with convincing but entirely fabricated documents outlining a nonexistent invasion plan, then placed it in the sea off Spain. The expectation was that the body would wash ashore and the supposed intelligence would eventually reach German authorities.

That extraordinary real-life operation becomes the subject of Operation Mincemeat, adapted by screenwriter Michelle Ashford from Ben Macintyre’s bestselling nonfiction book and directed by John Madden.

Colin Firth, Matthew Macfadyen and Johnny Flynn lead the cast

Colin Firth and Matthew Macfadyen portray Ewen Montagu and Charles Cholmondeley, the British intelligence officers responsible for the deception. Both bring the restrained, polished manner associated with wartime British dramas to their roles.

Johnny Flynn plays Lt Cdr Ian Fleming, the gifted naval intelligence officer who would later create James Bond. Flynn gives the future novelist and spy-fiction icon a playful, tongue-in-cheek presence, particularly as the film suggests that Fleming may have had a hand in developing the original idea.

But the story’s most important character may be Jean Leslie, an MI5 clerk played by Kelly Macdonald.

Leslie’s photograph is placed on the corpse as part of the fictional identity created for Capt William Martin, making her the supposed girlfriend of a man who never existed.

Her role gives the film a more emotionally sensitive dimension. Rather than treating the dead homeless man simply as a tool in a military deception, the characters are encouraged to consider the human consequences of what they have created.

The fabricated identity becomes something more than a collection of documents and photographs. It forces those involved to reflect on their own loneliness, pressures and emotional lives.

A very different take on the same wartime operation

Operation Mincemeat is not the first film to dramatise the extraordinary scheme.

The earlier The Man Who Never Was (1956) was adapted directly from Montagu’s memoir and approached the story differently. It added a fictional, slightly noir-influenced subplot involving a pro-German Irish spy who investigates the supposed girlfriend of the dead “captain”, played by Gloria Grahame.

Madden’s film instead places greater emphasis on the people behind the deception and the emotional consequences of manipulating a real human body to make the story believable.

Did the deception actually work?

The film remains deliberately cautious about the ultimate effectiveness of Operation Mincemeat.

It hints at layers of espionage, counter-espionage and double-bluffing that may have helped the deception succeed, without turning the question into a straightforward conclusion.

This places the film within a familiar tradition of British wartime dramas centred on the home front rather than the battlefield.

Like Munich: The Edge of War, Their Finest, The Imitation Game and Darkest Hour, Operation Mincemeat focuses on strategic ingenuity, political manoeuvring and morale during wartime. These films tend to find drama in the people attempting to influence the course of history from offices, homes and other settings far removed from the front line.

Stranger than fiction

There is plenty to admire in the remarkable story at the heart of Operation Mincemeat, and the film is consistently watchable.

Yet its biggest challenge is also its source material. The real operation was so bizarre and audacious that turning it into conventional cinematic drama can make it seem less extraordinary than it actually was.

Despite its strong cast and intriguing historical premise, the film sometimes struggles to find a fictional shape capable of matching the sheer strangeness of the real-life deception.

The result is an entertaining wartime spy drama that is most compelling when it allows the extraordinary details of Operation Mincemeat itself to take centre stage.