In the First and Second World Wars, Nissen Huts were built in their thousands as a simple building which which could act as offices, storage sheds or living quarters for the troops.
The design was created by a Canadian engineer serving in the British Army, Major Peter Nissen, in April 1916.
It's said one of the half-moon shaped buildings could be built by four servicemen in just a few hours.
In the First World War most Nissen huts were built on the Western Front in France and Belgium. But in the Second War they were widely used at air bases in Britain.
Some remain as relics of a bygone era.
With wartime shortages, the semi-cylindrical buildings made from wooden frames and corrugated steel needed to be economical in terms of the materials used and they needed to be portable.
Click below to watch a video report by ITV News Anglia's Stuart Leithes
At what used to be RAF Bottisham near Cambridge a new museum is being established to educate visitors about the airfield.
Volunteers have also been re-creating a Nissen hut to the original specifications.