Stations that were heavily used or militarily important grew by compulsorily purchasing extra land, changing designations as necessary. Aerodromes would often grow into sprawling sites, due to the building of headquarters/administration offices, mess buildings, fuel and weapon stores, wireless huts and other support structures as well as the aircraft hangarage and repair facilities. Narborough and Marham both started off as Night Landing Grounds a few miles apart. One was an RNAS Station, the other RFC. Narborough grew to be the largest aerodrome in Britain at with of buildings including seven large hangars, seven motorised transport (MT) garages, five workshops, two coal yards, two Sergeants' Messes, three dope sheds and a guardhouse. Marham was . Both these Stations are now lost beneath the present RAF Marham. Similarly, Stations at Easton-on-the-Hill and Stamford merged into modern day RAF Wittering although they are in different counties.