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 DatesNumber of Casualties
Kaiserschlacht (Kaiser’s battle) Northern France / West Flanders, Belgium March 21 – July 18, 19181,539,715
Battle of the Somme Somme River, France July 1 – Nov. 18, 19161,219,201
Battle of Verdun Verdun-sur-Meuse, France Feb. 21 – Dec. 20, 1916976,000
Battle of Passchendaele Passendale, Belgium July 31 – Nov. 10, 1917848,614
First Battle of the Marne Marne River near Paris, France Sept. 5–12, 1914483,000
Battle of GallipoliGallipoli Peninsula, Turkey April 25, 1915 – Jan. 9, 1916473,000
Battle of Arras Arras, France April 9 – May 16, 1917278,000
Battle of the Argonne Forest Argonne Forest, France Sep. 26 – Nov. 11, 1918187,000
Battle of Tannenberg Near Allenstein, East Prussia Aug. 26–30, 1914182,000
Ninth Battle of the Isonzo Soča valley, Slovenia Oct. 31 – Nov. 4, 1916138,000
Sources Department of Defense and Veterans Administration, firstworldwar.com, and history.com.

Information Please® Database, © 2014 Pearson Education, Inc. All rights reserved.

Casualties in World War I
World War I Battles with the Most Casualties<

stay connected

Sign up for our free email newsletters and receive the latest advice and information on all things parenting.

Enter your email address to sign up or manage your account.

Facebook icon Twitter icon Follow Us on Pinterest

editor’s picks

highlights

Top 10 Group Halloween Costumes for Families
These store-bought and Pinterest-inspired Halloween costume ideas for groups are the perfect way to show off your creative side at your Halloween party or while trick-or-treating.

Kindergarten Readiness App Wins Gold
Our Kindergarten Readiness app won the Gold Award of Excellence in the educational category at the 2014 Communicator Awards. This valuable checklist comes with games and activities to help your child practice the essential skills she needs for kindergarten. Download the Kindergarten Readiness app today!

12 Spine-Tingling Halloween Movies for Teens
Are you looking for a movie with just a little bit of spook-factor for your teen? Check out these 12 spine-tingling Halloween movies!

Find Today's Newest & Best Children's Books!
Looking for newly released books for your child? Try our new Book Finder tool to search for new books by age, type, and theme, and create reading lists for kids!