To anyone who has played the campaign.
This is a secondary objective:
Improve army morale by using your heroes in combat. This takes the form of extra attack points all of your soldiers, which is lost if your heroes are unhorsed
Does this actually work? I don't see any extra damage...
There have been many changes to Elephant archers, SOTL explains them nicely in this video:
Some nerfs compared to the OG Elephant archers was expected, since they can now be created in archery ranges rather than castles. And is available to 3 civs...