Easiest way I found to do this is to load Mission 14. No command points necessary.
Run up and to the right, kill the sniper on the ridge. Continue in the same direction to the middle of town and pick up the 3 rockets. Run south, and there should be around 10 enemies following you in bunches of 2-4. Try to group them together, fire rockets at them until you're out, get killed, rinse, and repeat.