# Gas Alarm (c.1918)

British troops conduct an anti-gas drill. Warnings are sounded by strombos horns to troops in trenches. Gas masks are donned. Gassed men are carried from trenches on stretchers. Phosgene detectors are used to test the air. Trenches are cleared with Ayerton fans. Masks are taken off and rifles cleaned.

- Kind: Short
- Year: 1918
- Runtime: 8 min
- By: US Signal Corps. Footage provided by British troops.
- Genres: War
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Gas_Alarm_(c.1918).webm)
- Licence or status: Public domain (as the archive states it)
- Credit: US Signal Corps. Footage provided by British troops.
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/66554410?play=1)