Dearneland is a Territory of the Empire of Adammia, surrounded by the county of South Yorkshire in the United Kingdom. It is made up of an end-terrace house, a narrow driveway and a garage. It is most notable for being home to the headquarters of the Adammic Air Force, AAF Dearneland. It is 186m² in size. Its governor is Shogun Sir Daniel Pettinger KOA.

AAF Dearneland airbase covers the entirety of the territory. It is the headquarters of the Air Force and the Air Force's only unit, the 1st Imperial Air Group, is stationed there. Commodore Dan Pettinger, as the Chief-of-Staff of the Air Force and the leader of the 1st Imperial Air Group, oversees all military activity there. There are an estimated 40 remote-controlled aircraft on-site, though the AAF only currently has direct access to around 3 of them. Facilities are available for the repair of aircraft and the construction of new ones. The site also has an amateur radio setup, making it the only place in the Empire with advanced radio communication capabilities, though again the AAF does not have direct access to this.