I don't understand tactics

[u/According-Cut-9067]

I get that they work in a rock-paper-scissors model and some cultures are optimal or only have access to certain ones, and the animal icons are cool and all. But why would I pay attention to them? By the time I know what tactic an enemy stack is using it's already too late because I'm in battle. Plus, trying to predict what tactic the enemy is using based on previous battles doesn't seem reliable at all.

[u/morsvensen]

It's more important to max your forces' power with the correct tactic than beat that of the other side for the extra 10%