A 92-year-old woman was buried earlier this month with British military honors for her work cracking the Nazi’s Enigma code during World War II. She was buried at the Omaha National Cemetery next to her husband of 72 years, John Watters, who died in June at the age of 101.

Jean Briggs Watters was British at the time of the war and enlisted in the Women’s Royal Naval Service at the age of 18. She worked on a top secret Enigma codebreaking task force that cracked German communication codes throughout the war.

Watters was one of some 10,000 people that were mostly women who were part of the secret program led by Alan Turing. Turing was the subject of the 2014 Oscar-winning film The Imitation Game.

Watters operated an electromechanical machine called a bombe that deciphered signals. Her program at Bletchley Park saved lives and helped bring an end to the war.

Her family says she kept her work a secret for 30 years until it was declassified in 1975. Her son, Peter Watters, says when her husband found out what she did, he was shocked. He also served in the war as a U.S. Army Air Corps pilot. She had always told friends and family that she was military driver.

Watters met her husband in the war and they married shortly after. They retired to the U.S. in 1969. Her son said that even once the information was declassified, his mother was hesitant to talk about what she did.

The couple had five sons and one daughter. Watters received a medal and citation from former British prime minister Gordon Brown for her work and her name is also etched in a commemorative brick at Bletchley Park.

During her funeral service, the British Royal Navy officers gave her a final salute as a bagpiper played Amazing Grace. The Union flag was draped over her coffin. “It was a touching tribute from the homeland she loved,” said Peter.