10 ore 47 min, 11 nov 1918 anni - The Hundred Days Offensive. The Hundred Days Offensive was a planned Allied attack on the German empire. It happened from Aug 8-11 Nov 1918 in Amiens to Mons, The ANZACS started this offensive with the help of some of the Allied powers. They pushed the German forces back and the German forces agreed to sign the armistice.