Book excerpt: How the British, ANZACs and Canadians finally broke the German army on the most decisive day of the Great War. The British attack at Amiens was the most decisive day of the Great War. In earlier offensives, a gain of a few hundred yards counted as a 'victory', but this time our troops advanced seven miles in a day and broke clean through the German defences. The long agony on the Western Front was nearly over. Spearheaded by tanks and armoured cars and supported by the RAF, the attack was led by the Australian and Canadian Corps, with British and French troops on the flanks. Elaborate deception measures were employed to ensure surprise. Drawing on both primary and secondary sources, as well as eyewitness accounts, this book describes how the attack was conceived, the preparations, and the actual assault itself, as well as what happened on the subsequent days and how Amiens paved the way for the final victorious Allied advance.