Are you wanting to work HF or VHF/UHF or both?
It's like pulling teeth....
OP, "ham radio" covers a lot of bandwidth, and no single antenna is going to work for the entire thing. You need to figure out what bands you want to work, who you'd like to be talking to, and for what purpose.
For example, many offroad groups use CB, GMRS, or FRS (no license necessary). CB is in the 11 meter band (27MHz) and GMRS/FRS is 462ish-467ish MHz, and no single antenna will work for both.
The Tech ticket gets you 2 meters (144ish MHz) and 70cm (440ish MHz) but in this case the aftermarket makes dual-band antennas so you'd only have one radial mounted to the truck.
HF is much more complicated, and uses very specialized antennas and mounting.
The military uses none of the ham bands specifically, so any military antenna is going to be a big compromise and very inefficient (with a few exceptions for the HF spectrum). AntennaClimber here on the forums will be helpful if he chimes in.
Your options are to force-feed a military antenna to the ham frequencies, or come at it from the other direction and use a commercial ham radio antenna made to look military. The former is inefficient and/or expensive, the latter isn't ascetically accurate but much more efficient and inexpensive.
This thread discusses the Duke CIED antenna I converted to run 2 meters and 70cm radios. There are many other threads on the subject as well.
But FIRST you need to decide what bands you want and radio you want to install.
