DURING THE FIRST World War, the British Army developed a style of hut known as the Nissen. The simple design used curved corrugated iron for the roof and walls (think of a typical New Zealand barn). Designed by a British-Canadian engineer, Major Peter Nissen, they proved to be both inexpensive and remarkably quick to build. (According to Wikipedia, the record was under 90 minutes).
Nissen huts continued to be used
