Originally posted by E25280
You may already know this, but there was an M-5 version of the halftrack, built by International Harvester I believe (M-3 was a White design). Basically the same in function, different engines, I believe, and the M-5 had the 50cal mounted toward the side instead of near the middle IIRC.
Correct, the M5 was built by International Harvester. The main difference being, that the IH version had homogenous 5/16" armour on its rear bed, and rounded rear corners. The rest of the halftracks (which were in fact designed by White based off their early M3 Scout Car series) had armour of 1/4" face hardened plate which was bolted together with 3/8" countersunk bolts. The down side to these was that a round strike on the bolt would send the stud and nut flying into the interior of the vehicle....
The Halftracks carried a very wide variety of weapons. From the 75mm howitzers deployed on M2 chassis to provide anti-tank firepower in North Africa, to the late war designed M-16 which features quad.50's. All in all, it is a nice design, but extremely thin skinned.
On a note, the Israeli's are still using the Halftrack chassis with a turbo diesel supplementing the original White 160AX gasoline engine (think flat head 6), and it is in service to this day, albeit not as an APC, but as a utility vehicle.