Barbed wire was the cheap and effective method of protecting trenches from attackers in WW1.
Are you sure
Yes, I am sure. Barbed wire was widely used in World War 1 as a defensive measure to protect trenches. It was a cost-effective way to slow down or impede enemy troops, making it difficult for them to easily cross or infiltrate the trench lines. It acted as a physical barrier and served as a deterrent to attackers.
