From the German name UNIversal-MOtor-Gerät, universal motor equipment, Unimogs feature very high ground clearance (greater than the Humvee) made possible by portal gears[?] that allow the axles and transmission to be higher than the tires' centers. Unimogs also feature a flexible frame that allows the tires a wide range of vertical movement to allow the truck to comfortably drive over extremely uneven terrain (as in strewn with meter high boulders).
Unimogs have been used by many different militaries, including the German and Swiss armies.
The most popular Unimog model in terms of number of trucks manufactured is the Unimog 404, produced in troop carrier[?], and radio box variants and powered by a 2-liter waterproofed Mercedes-Benz gasoline engine that produced as little as 80hp in the most common versions of this model.
Unimog 404 FAQ: http://www.cs.brandeis.edu/~zippy/unimog-404.html
wikipedia.org dumped 2003-03-17 with terodump