What is falling incident of lord of the ring The Return of the Kings?

In "The Lord of the Rings: The Return of the King," the term "falling incident" typically refers to the climactic moment when the forces of good confront the overwhelming might of Sauron. This occurs during the Battle of the Black Gate, where Aragorn leads an army to distract Sauron from Frodo and Sam's mission to destroy the One Ring. The tension escalates as the fate of Middle-earth hangs in the balance, culminating in the destruction of the Ring and the downfall of Sauron's power. This pivotal moment signifies the triumph of hope and unity against darkness.