STAMPEDE!

Mûmakil are sturdy beasts, easily capable of slaughtering far more points of troops than they cost to field. But that deadly power comes at a price: Stampede. One Stampede can ruin everything. There are a number of times that I have lost whole wedges of men to a Mûmak that, stricken by pain, and moved by my cackling opponent, has crashed through my own lines. Be aware of this. One well-placed arrow can ruin all your carefully laid plans. Since it can only move 8"/20cm, keep it that far away from your other men until the battle lines crash and you are at reduced risk from your opponent's archers. Archers, along with the already mentioned mighty Heroes, are the largest threat to the animal. Close on the enemy fast to minimise the number of shots that come your way. Also fill your howdah with bows. Haradrim bows are excellent, thanks to their (incredibly tricksy) Poisoned Arrows rule. From the top of a howdah they are both well protected and have a marvellous field of fire. By concentrating your own arrows on the enemy's bowmen, you give them something very serious to worry about and can hopefully kill enough of them to keep your Mûmak safe.

These men of Gondor hope to cause a stampede in short order.