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.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
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.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
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.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.