In November 1917 tanks were no novelty on the battlefield anymore. Since summer 1916 British and French had used these steel juggernauts singly or in pairs to support their infantry. But they are slow and provide inviting targets on the open battlefield for the German artillery. Today the 3rd army of the BEF will change the rules of the game. 476 tanks will overrun the German lines like a wall of steel. This attack must be a success as the reputation of the whole tank arm depends upon it.