1983: the United States Marine Corps experiences its greatest single-day loss of life since the Battle of Iwo Jima when a truck packed with explosives crashes into their headquarters and barracks in Beirut, Lebanon. This horrifying terrorist attack, which killed 241 servicemen, continues to influence US foreign policy and haunts the Marine Corps to this day.

Now, the full story is revealed as never before by Jack Carr and historian and Pulitzer Prize finalist James M. Scott with this "definitive, behind-the-scenes account of a mission and a fight that changed America" (Doug Stanton, #1 New York Times bestselling author). Based on comprehensive interviews with survivors, extensive military records, as well as personal letters, diaries, and photographs, this is "a masterwork of research and storytelling" (Peter Schweizer, #1 New York Times bestselling author).