Dodge D3/4 APT army identification

[Walde Libera]

Dave

Happy New Year!

Just a frame now, working on the 237 engine. It appears it may have been replaced in the mid fifties. Can't find a serial number on the engine unless I'm looking in the wrong place, found a number stamped in the cylinder head 1072812 under the oil filter bracket and the only other stamp I found are 5 single letters stamped along the left side block one letter in each raised casting protrusion. Letters are C,C,B maybe R, C and D.


Chassis S/N 91166298
Stamped on frame next to Chassis S/N is T236-7476-C

Dash plate reads the same plus:

D3/4 WP/APT
S/M 6423
Date of Manufacture-June 29, 1945

Walde