The Parc d'Artillerie or Artillery Park near Verdun, during World War I, circa 1916. (Photo by Henry Guttmann/Hulton Archive/Getty Images)

On this Day 21 February 1916: The Battle of Verdun commenced

The battle was fought from 21 February to 18 December 1916, and was the largest and longest battle of the First World War on the Western Front between the German and French armies

Lasing for 303 days, it was the longest and one of the most costly in human history. In 2000, Hannes Heer and K. Naumann calculated 377,231 French and 337,000 German casualties, a total of 714,231, an average of 70,000 a month.

November 1916:  Soldiers in a trench outside a dugout at Verdun.  (Photo by Topical Press Agency/Getty Images)

5. Verdun Dug Out

November 1916: Soldiers in a trench outside a dugout at Verdun. (Photo by Topical Press Agency/Getty Images)
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1916:  French troops going ' over the top' during the Battle of Verdun.  (Photo by Keystone/Getty Images)

6. Over The Top

1916: French troops going ' over the top' during the Battle of Verdun. (Photo by Keystone/Getty Images)
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June 1916:  Captured Germans in a prisoner of war camp in Verdun.  (Photo by Hulton Archive/Getty Images)

7. Prison Camps

June 1916: Captured Germans in a prisoner of war camp in Verdun. (Photo by Hulton Archive/Getty Images)
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circa 1918:  Engineers clearing away wire entanglements from a German position, to make way for a new road to the front, North West of Verdun, France.  (Photo by Hulton Archive/Getty Images)

8. Army Engineers

circa 1918: Engineers clearing away wire entanglements from a German position, to make way for a new road to the front, North West of Verdun, France. (Photo by Hulton Archive/Getty Images)
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