 | This base hosts/is part of the army. |
 | This base host Nato facilities/is a Nato base |
 | This base hosts/is part of the Navy |
 | This base hosts nuclear weapons or is part of the nuclear infrastructure. |
 | This base hosts surveilliance systems (often linked to "Star Wars"). |
 | (Part of) This base is used as a bomb store (or other types of military storage) |
 | This base hosts US forces, or is under control (officially or unofficialy) of the US. |
 | This base hosts a headquarter (such as Army Headquarters, or Joint Forces headquarters, etc.). |
 | This base hosts/is part of the air forces (RAF, USAF or others) |
