Supply and personal transport in planetary grounds are a difficult and dangerous job. Not only hostile creatures, but also raiders, harsh terrain and enemy attacks can easily destroy any normal military transporter.
The military trucks known as "Mobile Walls" have a lot of functions as support. First its a very resistant supply and personal transporter, that can withstand even a direct nuke thanks to its many allows of different materials.
Second, it have a enormous military energy generator, shielded against EMP, making it easy to camp in any place. It also can lock with other Mobile Walls or Mobile Towers [link] and make a sturdy defensive position to protect troops and weaker vehicles from ground assault.
Its enormous light cannons can illuminate the way over 2km of distance in all directions, making them a good support for night fights or ambushes, and also a useful beacon for landing ships.
But that APC is awesome, you should make a more all terrine version.
I got the idea from the Old West carriages that used to make a circle formation when attacked. Why don't give them shields and armor?
Oh yes! I think the Enclave kicks more ass. At least they were worse enemies in Fallout 3 than the NCR in New Vegas
Well, maybe Enclave has more tech, but NCR has Ranger Veterans! The one's with the coat and gasmask which has red lenses