Glossary of terms

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a waterproof material made by cementing layers of cloth with rubber


the authority to carry out a particular policy or task as a result of winning an election or vote

merchant ship

a ship that is part of a country's commercial shipping fleet, involved in transporting goods or carrying passengers; also known as a 'merchantman'


a group that operates like an army but whose members are not professional soldiers


a bomb hidden in the ground or in water that explodes when something touches it


a warship or aircraft designed for the carrying and laying of mines


to prepare a military forces for a conflict


to prepare a military forces for a conflict

Morse code

a telegraph code used for sending messages


the technique of using small arms

mustard gas

a chemical weapon used during World War I that caused blistering, sore eyes and internal injuries

muzzle velocity

the speed of a projectile as it leaves a gun's muzzle