Had some time to get the numbers,some of them were hard to read but here they are.
Drivers side on the firewall, I58I-3290

The original ID plate states,

General Motors Truck
Manafactured By
Yellow Truck&Coach Mfg. Co.
Pontiac,Mich.USA
Mdl.CF354 Sn.536
87hp@3000rpm Max Gross,15,500

There's another plate on both sides of the cab. I'm guessing the company that outfitted it for the military? It states,

Doane Motor Truck Co.
San Francisco, Ca.
No.AB153 Cap. 4/6 Tons

The engine number looks like D23605471. Looks like XS37 on the rearend. On the door in faded Yellow paint is,
USMC
50684
DQSF

I think thats just about all the pertinant info? I'd be interested in any help in correctly identifying my truck. Engine size,gear ratio,year all that. What it was used for in the military would be cool to know as well.
I recently had the tranny out to replace the freeze plug that had rotted away. Whats up with freeze plugs that only last 70 years?LOL I don't think it's the original tranny? It has a H/L trigger on the stick shift, and a driveline brake. I didn't get those numbers yet, but I did see a bowtie cast into the housing? The rearend has e-brake cables coming out and not going anywhere. Rearend looks stock tranny doesn't.