Frederick Mayer, the real “Inglorious Bastard” who served in World War II, has died. He was 94.

Mayer, a Jewish refugee from Germany and a naturalized U.S. citizen, was recruited by the Office of Strategic Services, the World War II predecessor to the CIA. He then volunteered to lead Operation Greenup, one of the most daring and successful missions behind German lines.

Mayer’s actions were portrayed in the award-winning documentary “The Real Inglorious Bastards,” and in Patrick O’Donnell’s book, “They Dared Return: The True Story of Jewish Spies Behind the Lines in Nazi Germany.”

Mayer, “beloved father, companion, uncle, neighbor, friend and bridge partner, died peacefully in his own bed with family at his side at 4 a.m.” Friday, his daughter Claudette Mayer wrote in an e-mail.

“At 94, Fred had stayed fully engaged mentally and physically until very recently,” Claudette Mayer wrote.

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