Sandy

25, belonging to Terradata (Abandoned) which was located at 420|468 has been razed by Sandy.

Heroism

Let's start by mentioning the most important bonus for attack: Heroism. Each level your commander has, will add the attack of the troop he is based on 6 times.

Commander attack multiplier with 10 heroism:

(10 x 6) + 1 = 61

61 times the base attack. In the case of Human T2 cavalry , the attack is:

65 x 61 = 3,965

To activate the full power of heroism, you need at least the same power in troops in your army, so you'll need 61 knigts or 108 charioteers (3965/37= 107.1, the 37 is the base attack power of charioteers ).

You are free to distribute these troops along the different divisions of your army, but do not break the Elite bonus for your division. Also at least 1 troop need to be under each commander. I usually do:

5 commanders: 57/1/1/1/1 (57 in first division and 1 in each other)
4 commanders: 58/1/1/1
3 commanders: 59/1/1
2 commanders: 60/1