In the spring of 1944, Ernest Hemingway travelled to London and then to France to cover the Second World War for Colliers Magazine. He had resisted this kind of journalism for the early period of the war but now threw himself into the thick of events. He flew missions with the RAF, went on a landing craft on Omaha Beach on D-Day, involved himself in the French Resistance forces and famously rode into the still dangerous streets of liberated Paris. He was at the Siegfried Line in the Huertgen Forest when the 22nd Regiment lost nearly every man sent into the fight.

This invigorating narrative is, in parallel, an investigation into Hemingway's subsequent work-much of it stemming from his wartime experience-which shaped the latter stages of his career.