The term WARTIME HUT is composed of two words, NISSEN and HUT. NISSEN is a six-letter word which refers to a type of semi-circular corrugated steel structure used as a shelter during wartime. The Nissen HUT was developed by the British during World War I and was widely used in both World Wars. The second word, HUT, is a three-letter word which refers to a small, simple dwelling or shelter. WARTIME HUT is therefore a term used to describe a small, semi-circular corrugated steel structure used as a shelter during wartime.