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A '''Nullah''' in it simplest terms is a steep, narrow valley, whichthat is very characteristic in hilly or mountainous locations where there is little rainfall. A nullah, in a time of heavy rain, will control the waterflow down the course of the valley and release it into a wider opening such as a plain, river or the sea. Depending on the composition of a nullah, location and the ground in which it is formed, torrents of water can quickly carve these into steep-sided valleys.
Nullahs like this were used during the First World War One in Gallipoli on the southernmost tip of the peninsula during the [[Border Regiment]]'s involvement in the [[1st Battalion in the Helles Operations (1915)|Helles Operations of 1915]]. In many cases these were used as a form of cover to move from one location to another, in much the same way as [[trench|trenches]] were used, as a resultto lesseninglessen the number of casualties. [[Troops]] could move up and down the nullah to other locations, [[runners]] with messages could communicate between [[Battalion]], [[Brigade]] and Divisional Headquarters and [[stretcher bearers]] could remove the wounded. It was very much dependent on the size and location as to how useful they were as a form of cover for enemy fire.
A naturally occurring nullah is very similar to that of a man-made one, typically in the form of concrete waterways used to control the excessive flow of water, particularly through cities; these act in exactly the same way but with the benefit of delivering more control.
{{Glossary}}
[[Category:GallipoliGlossary]]
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