It started in 1914, when World War One started because they thought that it was a good technique.
"Trench warfare was used in World War I"
Trench Warfare.
sap
your answer is in the category trench warfare was one of them there was also air warfare
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.
"Trench warfare was used in World War I"
World War 1 introduced aerial warfare with airplanes and trench warfare
Trench Warfare.
Trench warfare. They would sit in trenches and shoot at the enemy trench
Trench warfare. They would sit in trenches and shoot at the enemy trench
Trench Warfare
Trench Warfare
trench warfare chemical warfare
Trench Warfare
trench warfare
Trench warfare.
The First World War.