[tmcc]

I think basically that stock militia should be very weak against well equiped and well trained military units. Look at real world Earth. Even the difference between very well equipped and trained military forces vs. average military forces is absolutely decisive.

One option would be to mod in Militia training facilities. This way you would have to make an investment in research and valuable real estate to improve the war fighting capability of you militia. The results could be in the area of damage done and to hit modifiers for militia units.