The sieges that took place in the War of the Ring include the Battle of the Hornburg and the Battle of the Pelennor Fields. Both the forces of Sauron (and Saruman) and Man used powerful tools against their enemies. The following are some of the most notable.
Ballista EditThese large siege weapons resembled giant crossbows. A cord at the back would spring forward, releasing normally a spike or a piece of rock or metal. The orc army used these at the Battle of Helms Deep to hoist the siege ladders up to the wall.
Battering ram Edit
These tools were used to smash down entrances to the area under siege, normally a large wooden gate. The battering ram was hauled by Uruk-hai at the Battle of Helm's Deep, and was battered against the doors to the main hall of Helm's Deep. At the Battle of the Pelennor Fields, trolls had a large wolf-like ram called Grond, which contained a burning fire in its 'mouth'.
A metal shell resembling a mace head filled with a black, volatile powder. Also called "Explosive Mine" and "the Fire of Isengard/Orthanc". The powder is ignited by a suicide soldier, one of the insane Uruk Berserkers with a magnesium torch. Used exclusively by Uruk-Hai solely for the purpose of breaching the Deeping Wall during the Battle of Helms Deep.
Main article: CatapultCatapults were used at the Pelennor Fields by both the army of Minas Morgul and the Gondorians. It was like a large sling that swung and fired pieces of debris at the walls, its purpose to simply smash and destroy buildings. The Gondorians used catapults to fire broken debris from their city.
Siege ladders EditSiege ladders are extremely tall ladders used to scale large buildings. Uruk-hai used them at Helm's Deep. They were connected to a grappling hook and thrown up. Ladders would then rise up and lean against the wall. Uruk-hai could then climb them. They weren't very effective, as the Rohirrim and Elves could easily kick them down. In reality, the weight of the soldiers on the ladder (especially so for heavy Uruks) would make taking down the ladder quite difficult.
Siege tower EditThe largest of all siege weapons, the towers were the most effective weapon in getting into a besieged area. The siege towers of The Lord of the Rings were wooden, and were pushed by trolls. Orcs would remain inside until it reached the wall, where the front would fall forward like a bridge and the orcs would appear. They were used at Minas Tirith in The Return of the King. The most effective way to deal with them, as said by Gandalf, is to fire arrows at the hulky trolls that transport them.
A trebuchet is a type of catapult that can be easily targeted. The counterweight is, not a single stone, but a bucket of rocks. The Gondorians mounted them on their walls, and used rubble as ammo.