Joe Biden recently told Marines stationed in Japan that his son Beau died in the Iraq war—an incorrect statement that the president has puzzlingly made several times in the past. “My son was a major in the U.S. Army. We lost him in Iraq,” Biden told the troops in Iwakuni on Thursday, according to a video obtained by the New York Post. Despite his son actually dying of brain cancer at the Walter Reed military hospital in Maryland, Biden has made the same claim about Beau’s death at least twice before. Last October, Biden told an audience in Colorado that Beau “lost his life in Iraq.” Just weeks later, he said “I’m thinking about Iraq because that’s where my son died,” during a speech in Florida. In reality, Beau died in 2015 after battling stage four glioblastoma—a diagnosis that the president has previously attributed to the “burn pits” in Iraq, which the military used to destroy trash while Beau was deployed from 2008 to 2009.