Final Advance in Artois and Flanders

Hundred Days Offensive, 1918
Part of the Western Front of World War I
Allied gains in late 1918
Date 8 August – 11 November 1918 Location Amiens, France to Mons, Belgium Coordinates: 49°53′38.09″N 2°17′39.30″E / 49.8939139°N 2.2942500°E / 49.8939139; 2.2942500 Result Decisive Allied victory Collapse of the Western Front End of World War I Collapse of the German Empire
Belligerents
French Third Republic  British Empire  United Kingdom  Australia  Canada  India Newfoundland  New Zealand  South Africa  United States Kingdom of Belgium Portuguese First Republic Siam Kingdom of Italy	German Empire  Austria-Hungary
Commanders and leaders
Ferdinand Foch Philippe Pétain Douglas Haig John J. Pershing King Albert I	Paul von Hindenburg Erich Ludendorff Wilhelm Groener
Strength
Strength on 11 November 1918: c. 2,559,000 c. 1,900,000 c. 1,900,000 c. 190,000	Strength on 11 November 1918: c. 3,562,000
Casualties and losses
18 July – 11 November: 1,070,000 531,000 412,000 127,000	18 July – 11 November: 1,172,075 785,733 killed or wounded 386,342 captured 6,700 artillery pieces Breakdown Men and materiel captured, by country BEF: 188,700 prisoners, 2,840 guns French: 139,000 prisoners, 1,880 guns US: 44,142 prisoners, 1,481 guns Belgian: 14,500 prisoners, 414 guns 17,500 2,500 killed 5,000 captured 10,000 wounded

French Third Republic
 British Empire

 United States
Kingdom of Belgium

The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens. The offensive essentially pushed the Germans out of France, forcing them to retreat beyond the Hindenburg Line, and was followed by an armistice. The term "Hundred Days Offensive" does not refer to a specific battle or unified strategy, but rather the rapid series of Allied victories starting with the Battle of Amiens.

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