Fall of Isengard

The Fall of Isengard was a battle where Isengard's forces were destroyed and Saruman locked up in his Tower.

A number of Ents led by Treebeard attacked Isengard, even with more that 20,000 Orcs, Isengard perished, the only survivors of the attack were Saruman, Wormtongue and a small number of Dunlendings. The Orcs and the remaining Uruk Hai were slain by the ents. At least 4 Ents died at the attack.