Zero hour · Glossary · The Great War Chronicle

Warfare

The moment fixed for the start of an attack, when the barrage opened and the infantry left their trenches. The word "zero" was used so that all units could count times from it.

Mentioned in

Chapter V The Year of Attrition §8 The Somme I: The First Day
Chapter VI The Year of Revolutions §4 Arras, Vimy and the Chemin des Dames
Chapter VII The Last Gamble §6 Amiens: The Black Day of the German Army
Chapter IX In the Trenches §5 Going Over the Top
Chapter X The Machinery of War §5 Mining and Tunnelling: The War Beneath