Ground Attack Technology is under the CAS section of the air doctrine tree. It only says ground attack effieciency will be increased by 15%. So does this mean all planes including Tactical bombers or just CAS planes. Im interested because I don't have any CAS but have Tactical bombers. I can't afford to waste tech on it if it doesn't help my Tac's.
havn't got the game handy to check, but i think the tooltip SHOULD tell you which units it affects. mouse over the tech, and you shoulf get a tooltip that reads somthing like:
"cas: ground attack +15%
tac: ground attack +15%
Int: ground attack +15%
Ftr: ground attack +15%"
etc, etc.
if it does not list TAC, then it does not affect tac bombers.
however, if it lists no units, just the mission (as you say) then it upgrades that mission, and any planes attempting that mission get the benefit of it.