Do you like to use elefants?

[LorDBulA]

I used them but only against AI full stacks packed with heavy infantry.

I group elephants with cavalry in one big wing.
Then they charge, cavalry is sweeping all units that can danger elephants, elephants wheel on the level of enemy line and start to run along enemy line. Any unit that doesn't rout after elephant charge is finished of by cavalry charge.
In seconds whole enemy army is fleeing in panic.

They are terrifying weapons. One army with those beasts can annihilate whole enemy military force in few large scale engagements, virtually without any need for reinforcements from home ( since casualties in such army are minimal ).