Along with chemical weapons and explosives, WWI saw the development of chemical inventions with a much broader use in society. ... Many injuries were recorded as a result of gas, however, from chemical burns to chronic lung problems. The chemical weapons of WWI had uses beyond the war.
Scientific and technological progress served both sides in WWII. Both sides poured national resources into developing new and better weapons, materials, techniques for training and fighting, improvements in transportation, medicine, nutrition, and communications.