M2 gas mask

The M2 gas mask was a French-made gas mask used by French, British and American forces from April 1916 to August 1918 during World War I.^[1] The M2 was fabricated in large quantities, with about 29,300,000 being made during the war.^[2] It was intended to protect the wearer from at least five hours' exposure to phosgene gas, a common chemical weapon of the time.^[3]

M2 gas mask
British soldier demonstrating the mask
Type	Gas mask
Place of origin	France
Service history
In service	1916–1918
Used by	See Users
Wars	World War I
Production history
Designer	René Louis Gravereaux
Designed	1915
No. produced	29,300,000

American soldiers wearing M2 gas masks in a frontline trench (1919 postcard image)

History

The M2 mask was based on a design proposed in 1915 by René Louis Gravereaux of Paris. An order of 600,000 masks was produced in February 1916 and introduced for British forces the following month. The first M2 model was produced in only one size and often incurred damage when it was folded for placement in a metal container. A second model introduced in April 1916 was produced in three different sizes and included two separate eyepieces, so folding it would not cause damage. British forces were issued 6.2 million units of the second model between May and November 1916 and used it as late as August 1918.^[4]

When the United States entered World War I in 1917, it was unprepared for chemical warfare. The US Army issued its soldiers the British-made Small Box Respirator to protect against chemical attack, and the French-made M2 gas mask in case a mask had to be worn for an extended period of time. The untrained soldiers tended to put on the Small Box Respirator when first confronted with a gas attack and then switch to the M2 when they realized they would have to wear it for a long time. While switching gear, some soldiers inhaled the poison gas and became casualties.^[5][6]

Design

In contrast with gas masks made later in the war, the M2 did not have a special filter that fit onto the mask. Instead, it was made of one piece of material which covered the face completely. During 1917, an additional mask strap was produced, intended to be worn around the head of the wearer.^[4]

The first model of the M2 mask was introduced during March 1916 and had a rectangular piece of cellophane glass for viewing, protected by a piece of glass in front of it. In April, the rectangle was replaced by two round pieces of cellophane glass due to problems on the earlier model, which could not be cleaned without removing the glass. These two glasses were held in place by a metal ring on each eyehole, with 12 dents in each so as to better hold the glass on the mask.^[4]

Protection

The M2 protected the wearer for at least five hours against the common World War I chemical weapon phosgene.^[3] After a while, condensation in the mask built up, which severely encumbered the wearer, requiring the mask to be taken off.^[2]

Users

•  France
•  United Kingdom
•  United States

References

1. Walk, Robert. "Infantry or General Purpose Mask". Gasmasklexicon. Retrieved 11 April 2011.
2. "French M2 Gas Mask". Before 1919. Archived from the original on 26 September 2011. Retrieved 11 April 2011.
3. Jones, Simon (2007). World War I Gas Warfare Tactics and Equipment. Osprey Publishing. p. 30. ISBN 978-1-84603-151-9.
4. Jones, Simon (2007). World War I Gas Warfare Tactics and Equipment. Osprey Publishing. p. 31. ISBN 978-1-84603-151-9.
5. Smart, Jeffrey K. (2000). "U.S. Army gas masks, World War I". brinkster.com. Archived from the original on 26 July 2011. Retrieved 11 April 2011.
6. "The Fog of War: Gas Attacks". First Division Museum at Cantigny. Retrieved 11 April 2011.