Its purpose was to guard the Causeway against the possible of enemy attack.
During the War of the Ring, they were guarded by Faramir and the men under his command. At the start of the Battle of the Pelennor Fields on March 13, 3019, the Causeway Forts were overrun and captured by the armies of Mordor under the Lord of the Nazgûl, and Faramir and his troops were forced to retreat.
- ↑ The Atlas of Middle-earth, The Lord of the Rings, "The Battle of the Pelennor Fields"
- ↑ The Lord of the Rings, The Return of the King, Book Five, Chapter I: "Minas Tirith"
- ↑ The Lord of the Rings, The Return of the King, Book Five, Chapter IV: "The Siege of Gondor"
- ↑ The Complete Guide to Middle-earth