Trench warfare was one of the new forms of warfare introduced during World War 1. Another new form of warfare was chemical warfare.
World War 1 introduced aerial warfare with airplanes and trench warfare
Ypres, Belgium
chemical warfare was prevalent , later outlawed by the Geneva convention
The British tank, and the trenches.
Machine GunsTanks
Trench Warfare.
Trench Warfare
Naval warfare in the Mediterranean during World War I happened in 1919-08.
trench warfare
The machine gun changed warfare
Mustard Gas was introduced into warfare in September of 1917.
Trench warfare is famous because of its large scale use during World War 1. During the war, both sides used this type of warfare for protection.