JECTX
Chieftain
So in a current game I am playing I have tanks rolling off of the line and straight into combat. In a couple cities I have great generals and I am giving the tanks city raider I and barrage I (+20% collateral damage). When these tanks, and even tanks with barrage II, attack stacked units in enemy cities there is no damage given to the non defending units. I am wondering if there is something I am missing with the barrage promotion line or if that certain promotion does not work against older units. Ex: I attacked a city that had 60% fortify and 5 musketmen with a tank with barrage II and was victorious but dealt no damage to the static units beneath the defender.
I'm stupid enough to not actually notice, though. 
(though I don't understand why they would take it out? Why wouldn't a tank be able to do collateral damaged)
. I'm just starting back up with civ so hopefully I'll be posting more advanced question and strategies later once I get up to Emperor and Immortal