I read about the strategic values of gases used in the war. Over 1 240 850 casualties and 91 198 deaths resulted from poison gas. It was interesting to learn about the gases that were used, chlorine, phosgene, and mustard gas, and their horrific effects on the soldiers .
While initially testing chlorine gas, the Germans made a hole in the Allied line approximately 4 miles wide. The terrified allied troops fled in disorder. Had the Germans been prepared for this they could have made a decisive breakthrough through the French line. The German infantry did eventually advance into the gap, but did so nervously and with hesitance, allowing the French to regroup and reform a continuous line.
It was informative to learn about the preventative measures taken against gas poisoning. Towards the end, gas became an ineffective measure of attack for either the allied forces, or the Germans, because they were quickly able to respond by using new methods of protection.
It was interesting to learn that it was dangerous to assault and capture a trench after the troops fired mustard gas into it. They had to wait until it was safe and that gave the enemy time to retaliate by regrouping and falling into a defensive position or mounting a counter attack.