In 1941, as World War Two raged, scores of men stepped forward to answer Winston Churchill's call for volunteers for Special Service, a high-risk opportunity to undertake the most hazardous, top-secret duties of war. Comprised of some of the finest fighting units in the entire British Army, these warriors longed to leave behind their mind-numbing garrison duties for battle. A rightfully proud regiment with an unrivaled esprit de corps, they were disavowed as unruly by top brass, unyieldingly vaunted by Churchill, and courageously loyal to the clandestine "butcher and bolt" raids that made their sacrifices—and their triumphs—legendary. But even as the combat-worn ranks of the SAS risked all to deliver the first resounding defeats on Nazi Germany, there were well-founded fears that their fortunes would change.

In Brothers in Arms, Damien Lewis pays tribute to the mavericks and visionaries who founded elite-forces soldiering—the SAS. Exhaustively researched from an invaluable trove of never-before-seen documents, wartime letters, diaries, mission reports, rare photos, undeveloped film, plus interviews with WWII veterans and their surviving families, Damien follows one close-knit band of men from the founding of the SAS through to the Italian landings, which truly turned the tide of the war.