Select the correct word or phrase to complete each sentence to demonstrate how the weaponry and defense tactics changed in warfare during WWI.

Question

1. Most fighting on the Western Front was done from Query 1
.
2. Soldiers wore Query 2
to defend against chemical warfare.
3. Battles between airplanes became known as Query 3
.
4. Query 4
were designed to attack German submarines.

Answer 1

1. Most fighting on the Western Front was done from trenches.
2. Soldiers wore gas masks to defend against chemical warfare.
3. Battles between airplanes became known as dogfights.
4. Depth charges were designed to attack German submarines.