[Imp]

Did not realise it was common & thought it was more akin to detecting a unit through a building & firing. As in the target was not visible to the naked eye but the TI system detected it through what was more a sand dune.
Cant model that part though TI does tend to see better over hinderance terrain like sand dunes but can make tanks dug in that way yourself if you wish. A few OOBs already have them Iraq being one of them listed under fortifications.