World War I Battles with the Most Casualties
The table below focuses on specific battles with the most casualties in the First World War. See this timeline for other World War I battles and longer campaigns.
|Battle||Location||Dates||Number of Casualties|
|Kaiserschlacht (Kaiser's battle)||Northern France / West Flanders, Belgium||March 21 ? July 18, 1918||1,539,715|
|Battle of the Somme||Somme River, France||July 1 ? Nov. 18, 1916||1,219,201|
|Battle of Verdun||Verdun-sur-Meuse, France||Feb. 21 ? Dec. 20, 1916||976,000|
|Battle of Passchendaele||Passendale, Belgium||July 31 ? Nov. 10, 1917||848,614|
|First Battle of the Marne||Marne River near Paris, France||Sept. 5?12, 1914||483,000|
|Battle of Gallipoli||Gallipoli Peninsula, Turkey||April 25, 1915 ? Jan. 9, 1916||473,000|
|Battle of Arras||Arras, France||April 9 ? May 16, 1917||278,000|
|Battle of the Argonne Forest||Argonne Forest, France||Sep. 26 ? Nov. 11, 1918||187,000|
|Battle of Tannenberg||Near Allenstein, East Prussia||Aug. 26?30, 1914||182,000|
|Ninth Battle of the Isonzo||Soa valley, Slovenia||Oct. 31 ? Nov. 4, 1916||138,000|
Sources Department of Defense and Veterans Administration, firstworldwar.com, and history.com.
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|Casualties in World War I|