Cawthon’s book, Other Clay: A Remembrance of the World War II Infantry (University Press of Colorado), was a survivor’s account of infantry combat, told by a frontline officer whose 116th Infantry Regiment landed at Omaha Beach on D-Day and fought its way across Europe to the Elbe. Other Clay included many of Cawthon's reminiscences written first for American Heritage.
On the beaches of Normandy, on June 6, 1944, the U.S. Army suffered its heaviest casualties since Gettysburg. The losses were greatest among the infantry companies that led the assault, and Cawthon described firsthand the furious and deathly chaos of the daylong battle to get off the beach and up the heights. Reduced by casualties to half its preinvasion strength, Cawthon’s regiment still managed to fight off German counterattacks and engage in an all-out pursuit across France before the Germans counterattacked again at the Ardennes forest.
Cawthon provided a deeply felt and carefully recollected study of men confronting the face of death—their fear, their courage, their hunger and exhaustion, their loyalty to one another, and their miraculous and unreasoning ability to go one more step, one more day, one more mile.
Cawthon remained on active duty after hostilities were over and later commanded a battalion in the Korean War. After retiring from the U.S. Army Reserve, he operated a tree farm in Virginia.