+ Tweaking combat in city: Factors for bonuses: distance to own city (both sides), size of the city (defense), setting (ramp the bonus up), penalty for motorized/armored attack, penalty for attacking with a weak/small/low-quality unit, extra bonus if defending own supply city, being encircled nulls some defense bonuses, possible special early/late campaign effects
+ Fix: Later reinforcements units ending up on land, especially if landing-variation turned on