Anyone who has been to a model show in the last decade would know that military vehicles should have much more chipping and rust, even after a few weeks of service. You will also need to bend the fenders for realism, as this happened to every vehicle, apparently.
I suggest some red-brown streaks along the side, to indicate where your Jeep has been scratched against something. Again, this happens to every military vehicle, on every surface, no matter how difficult it would be to scratch the paintwork there. Also, don't forget to rub graphite on every edge, to show wear down to bare metal. However, keep the floor of the Jeep quite clean, with just dust effects in the corners and some worn paint. Remember, soldiers always carefully clean their boots of mud before getting into a vehicle. Always put lots of gloopy wet mud on the running gear and sides of the vehicle, but none where people walk.
With a bit of work, this could look exactly like models at shows.
MAFVA Information Officer