As usual I'm trying to be conservative and only apply what I feel is suitable / minimally necessary.
Weapons:
Biggest change: Increased artillery range from 6 to 12, added contrail to bullet and changed impact sound to default C&C. Minimum range 2 given.
Napalm is currently very ineffective; increased spread to 20 range to make more likely to kill targets, ROF slightly increased
MRLS rocket ranged increased from 8 to 12, with minimum range 2.
Guard tower range increased from 4 to 5 (Pillbox is 6, for comparison) and damage increased from 20 to 40.
Grenadier death explosion reduced in damage from 25-10 and in blast radius.