Machine Guns: Machine guns were rapid-fire weapons that could fire bullets continuously. They dramatically increased the firepower on the battlefield and resulted in high casualty rates during World War I.
Poison Gas: Poison gas, such as chlorine or mustard gas, was used as a chemical weapon during World War I. It caused severe injuries and often led to slow, painful deaths for those affected.
Tanks: Tanks were armored vehicles introduced during World War I. They could move across difficult terrain, provide cover for infantry, and had firepower capable of breaking through enemy defenses.