Chemical Warfare Service's Research Division conducted mechanical research led by Fogler. The image shows a front comparison of Types 1, 2, and 3 canisters used for chemical warfare. This photograph was taken on July 12, 1916, and received from the Chemical Warfare Service. It is labeled as Subject Number 51501.

---

Size: 8484px × 5809px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1, 2, 3, activities, agents, american, archives, army, canister, chemical, comparison, defense, development, division, engineering, equipment, fogler, front, gas, historical, history, images, innovation, mask, masks, mechanical, military, photo, photographs, protection, research, service, soldiers, strategies, tactics, technology, training, types, war, warfare, wartime, weapons, world, ww1