[Imp]

Mosborne pretty sure this has been covered several times (try a search) & like helo suggestions I think you are stepping outside whats possible.
This is an old programe & units cannot realy interact with each other.
We have ammo supply & loading other units & thats about it as far as I know a vehicle cannot give some of its MP to another unit & move it.

As a workaround you cannot repair stuff but you could simulate a repair vehicle that could move an immobile vehicle by giving it the carry capacity to lift it.
This will not work for destroyed vehicles as I do not think you can interact with wrecks.

Barring weapon jams about the only thing that could probably be fixed in the scope of the game is immobilisation due to getting stuck in mud or water obstacle. Others like mines rough would probably have caused a thrown track or some such. Even then I would think pulling 50 tons of metal out might take a while by the time you take into account things like careful approach of rescuer so he does not need help to.
Just read the rest of this thread maybe you should