What percentage of soldiers died in the First World War?

Fallen soldiers in World War I by country, 1914-18

Published by Statista Research Department, 01/01/2005
The First World War (1914 to 1918) has been described by the historian George F. Kennan as the "great catastrophe of the 20th century" and by the end of the war on November 11, 1918, it cost the lives of a total of over nine million soldiers worldwide.
Never before had a war brought about more combatants and its effects on society, politics, the economy and the cultural life of the participating states.

Central Powers vs. Entente

The First World War was fought between the so-called Central Powers - including the German Empire and Austria-Hungary - and the Entente or the Allies - initially consisting of France, England and Russia. The acts of war were initially largely limited to Europe, but escalated into a global war with the inclusion of the European colonial empires and the later entry into the war by the USA.

Material battles caused enormous losses