History and Use

The LAG (Light Anti gas) MK II was a British gas mask designed during the Second World War, first issued in 1943. The LAG was designed to remove the cumbersome hose and filter of the earlier British army gas masks, using a 60mm threaded filter attaching directly to the left cheek.

The LAG was first used operationally by paratroopers and other assault units on the 5-6th of June 1944 with the Allied invasion of Normandy.

This mask not only weighed less than the earlier models, but also enabled easier movement because of the elimination of the large filter and hose.


The mask is made of a thick rubber with elastic straps to connect the mask to the wearer. It features two large eye lenses made of glass, these appear to be exactly the same as the older model lenses (My particular mask lenses are dated 1941). The respirator makes use of a large voice diaphragm located on the mouth area, this projects the users voice fairly well.

Post war and Current use

Many of the MK II's were given to the Danish army post war, and most of the MK II's available of the surplus market will thus have Danish markings stamped on them. The MK II is plentiful on the surplus market and only cost about £20, most are in unissued condition.

Community content is available under CC-BY-SA unless otherwise noted.