I posted this on another forums where they were trying to ID a WC.
The Dodge's had several different model years. The earliest are the T202 — 1/2 ton also known as the VC's. VC-1-6, I think. Then there were the T203's which took up the VC-400 series of numbers. Not until the T211 did the name change to WC. A WC-25 would make it a T115, I think. The command cars are supposed to be the rarer ones I believe. Most were sent overseas and few came back. All of them sure are nice though.
The pickup version is the most basic I think:
The Carry All:
The Ambulance:
The Command Car: