Not only did the troops use guns but they also used new technologies like flamethrowers, machine guns, heavy artillery, and poison gas. The movie depicts the effects of the new weapons and how it killed soldiers. Poison gas was one of the deadliest weapons of World War 1. Chlorine gas was one of the poisonous gases and it was used to destroy the victim's respiratory organs and bring on choking attacks. Taking after on the heels of chlorine gas came the utilization of phosgene. Phosgene as a weapon was more intense than chlorine in that while the last was possibly fatal it caused the victim to viciously cough and choke. Mustard gas, an almost odorless chemical, was distinguished by the serious blisters it caused both internally and externally
