An Armoury World is the Imperial term for a planet that is used by the Departmento Munitorum to store vast amounts of weapons, ammunition, and war machines. These heavily defended worlds are the places where weapons, vehicles, ammunition, and other military equipment are stored while they await to be transported to wherever they are needed. An Armoury World could have thousands of armoured vehicles of every type and millions of tonnes of munitions and other materiel stored in its vast storehouses for hundreds or even thousands of years until the Imperium had need of them. Some Armoury Worlds store vehicles, weapons, and other equipment that are so old that the secrets of their manufacture have been nearly lost by the Adeptus Mechanicus, such as the ancient Imperial heavy tank known as the