In the darkest months of the Second World War, Churchill approved what seemed to many like a suicide mission. Under orders to attack the St Nazaire U-boat base on the Atlantic seaboard, British commandos undertook "the greatest raid of all", turning an old destroyer into a live bomb and using it to ram the gates of a Nazi stronghold. Drawing on official documents, interviews, unknown accounts and the astonished reactions of French civilians and German forces, The Greatest Raid recreates in cinematic detail the hours in which the "Charioteers" fought and died. Unearthing the untold human stories of Operation Chariot, Bridge of Spies author Giles Whittell reveals it to be a fundamentally misconceived raid whose impact and legacy was secured by astonishing bravery.