High Mobility Engineering Excavator (HMEE) vehicle markings

Not sure if this is the right place to ask, but here goes-- I'm looking for information on the type and location of vehicle markings that can be found on the rear of HMEE vehicles. Most of the photos I see on Google are either taken from the front or side, or else the rear is either too obscured or out of focus to determine what goes where. I did see one example which had what appears to be a white vertical panel with black numbers on the left rear, but that only showed in one photo of one vehicle. Any guidance would be appreciated.