The Spears of Organa were an array of defensive turrets built on the planet Alderaan by House Organa. The three turrets were built into the bedrock of the mountains near Castle Organa. While not up to weapon standards at the time, the Spears were still more powerful than any contemporary walker.
During the Alderaan Civil War, Jharkus Thul led the army of House Thul in numerous campaigns against House Organa along with its Galactic Republic allies. Thul forces attacked the Spears of Organa, intending to capture and use them against Organa Palace and the other Republic allies. The three Spears were designated Spear Cresh, Spear Osk, and Spear Trill.
Duke Charle Remmot Organa tasked a Republic-allied individual with retaking the Spears from Thul control. However, the individual, the Duke, and General Kashim of the Republic, were contacted by Jharkus after the individual secured the Spears, who revealed that the attack had simply been a diversion so that his forces could capture three hundred and forty-eight Organa subjects and take them hostage.
The Spears of Organa were created for Star Wars: The Old Republic, a massively multiplayer online role-playing game released by BioWare on December 20, 2011. They appear in the mission "Raising the Flag" for Republic players on Alderaan, where players are asked to defeat ten Thul troops at each of the Spears.