Key Facts
- Date
- 8 August 1918
- First-day advance
- Over 11 kilometres (7 miles)
- Allied divisions engaged
- 19 divisions in British Fourth Army
- German assessment
- Ludendorff called it 'the black day of the German Army'
- Significance in warfare
- One of the first major battles involving armoured warfare
Strategic Narrative Overview
On 8 August 1918, the British Fourth Army under General Rawlinson, spearheaded by the Australian Corps under Monash and the Canadian Corps under Currie, attacked alongside the French First Army under Debeney. Allied forces advanced more than 11 kilometres on the first day, capturing thousands of prisoners as German units surrendered en masse. The battle demonstrated the effectiveness of combined arms tactics using tanks, aircraft, artillery, and infantry operating together.
01 / The Origins
By mid-1918, the German Spring Offensives had stalled after initial gains, leaving German forces overstretched and their reserves depleted. The Allies, now reinforced by American troops and reorganised under unified command, planned a large-scale counteroffensive to exploit German exhaustion. The Amiens sector was selected for a surprise attack, with Australian and Canadian corps secretly concentrated for a decisive blow against German lines in Picardy.
03 / The Outcome
The Allied breakthrough at Amiens shattered German morale and convinced Ludendorff that Germany could no longer win the war. The battle opened the Hundred Days Offensive, a continuous series of Allied advances that pushed German forces back across France and Belgium. German military and political leadership ultimately sought an armistice, which was signed on 11 November 1918, ending World War I.
Belligerents & Mobilization Analysis
Side A
2 belligerents
General Henry Rawlinson, Lieutenant General John Monash, Lieutenant General Arthur Currie, General Marie Eugène Debeney.
Side B
1 belligerent
Erich Ludendorff.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.