Joe Biden says his son “lost his life in Iraq.”
Fact check: His son left Iraq in 2009 and died in Maryland six years later from brain cancer.
Beau Biden – On May 20, 2015, he was admitted to Walter Reed National Military Medical Center in Bethesda, Maryland, because of a recurrence of brain cancer. He died there ten days later, on May 30, 2015, at age 46. – Source Wikipedia
Biden returned from Iraq in September 2009 after completing his yearlong stint on active duty which included a 7-month deployment in the combat zone.