It is a German transport vehicle, and being operated by Germans, carries their equipment.
I have one too, it's a beast. Haven't started on it yet though. I'm going to be towing a Leopard 1 A1A4.
Check out this build review at PMMS, it might help you out somewhat:
Review of kit:
http://www.perthmilitarymodelling.com/reviews/vehicles/trumpeter/tr00203.htm
Build review:
http://www.perthmilitarymodelling.com/models/vehicles/tr00203const.htm