This 28mm Crusader Fort is a simply-made modular set of parts which can be placed together in many ways. It comprises 6 sheets.
Once downloaded, the sheets can be printed as often as you like, which means you can build up large armies very cheaply. You will need scissors, a craft knife, glue, appropriate paper and some stiffer card for bases, all of which are described in the how-to section.
Please note there are other ‘Desert’ Items in the terrain section which will go well with this.