The British Army is the principal land warfare force of the United Kingdom, a part of British Armed Forces.
Chlorine is a chemical element with symbol Cl and atomic number 17.
The gas mask is a mask used to protect the user from inhaling airborne pollutants and toxic gases.
Glycerol (also called glycerine or glycerin; see spelling differences) is a simple polyol compound.
Hexamethylenetetramine or methenamine is a heterocyclic organic compound with the formula (CH2)6N4.
Hydrogen cyanide (HCN), sometimes called prussic acid, is a chemical compound with the chemical formula HCN.
The Hypo helmet, or British Smoke Hood (its official name), was an early British World War I gas mask, designed by Cluny MacPherson.
The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having nearly perfect basal cleavage.
Phosgene is the chemical compound with the formula COCl2.
Sodium phenoxide is an organic compound with the formula NaOC6H5.
Tear gas, formally known as a lachrymator agent or lachrymator (from the Latin lacrima, meaning "tear"), sometimes colloquially known as mace,"Mace" is a brand name for a tear gas spray is a chemical weapon that causes severe eye and respiratory pain, skin irritation, bleeding, and even blindness.
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.