The Siege Tower is a siege engine from Mordor which cannot attack but instead latches onto the walls of castles, allowing friendly troops to climb up on the enemy castle walls. It is manned by two mighty trolls who... die once the tower is destroyed. The player can latch on to the wall by right clicking on it while having the tower selected and can unlatch by using the ability Retract Latch. The Towers can also be used to trample; they cause very little damage but can last a while since that also means that they take very little trample revenge damage.
This unit has no upgrades. This means that this unit can not gain any sort of permanent boost from upgrades found in either its palantir or from other units/heroes. If this is not the case, fill in the section following the policy.
Siege towers are useless unless it is a castle or fortress map. If it is the case they can be used to position archers on top of walls, trapping the enemy inside. You can also use it to mount other troops, creating quick access into the enemy base.