"From a decorated Marine war veteran and National Book Award Finalist, an astonishing reckoning with the nature of combat and the human cost of the wars in Iraq, Afghanistan and Syria. Toward the beginning of [this book], Elliot Ackerman sits in a refugee camp in southern Turkey, across the table from a man named Abu Hassar, who fought for al-Qaeda in Iraq and whose connections to the Islamic State are murky. At first, Ackerman pretends to have been a journalist during the Iraq War, but after establishing a rapport with Abu Hassar, he takes a risk by revealing to him that in fact he was a Marine special operations officer. Ackerman then draws the shape of the Euphrates River on a large piece of paper, and his one-time adversary quickly joins him in the game of filling in the map with the names and dates of where they saw fighting during the war. They had shadowed each other for some time, it turned out, a realization that brought them to a strange kind of intimacy. The rest of Elliot A