Caption for the image: "Diagram showing the mechanism of a German gas shell used during World War I. The diagram highlights the various components and features including a 3-needle holoka 2 injection system, string plunger, and a percussion pellet. This information was important for the Chemical Warfare Service to understand and defend against enemy gas attacks."

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Size: 8484px × 5718px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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