How many men died in the trenches of World War I?
Over 200,000 men died in the trenches of World War 1.
The first world war is usually referred to as a trench war. A trench war is fought generally in trenches You can look up trench warfare" in wikipedia where it will tell you more about how it is fought. Belgium and north France still have many sites where the trenches can be visited and viewed a sad memorial to a war in which so many people died.