Alderaan is an independent planet located within the Coreward Worlds region of space. Formerly one of the most notable worlds belonging to the Galactic Republic, it seceded from the Republic in protest of the signing of the Treaty of Coruscant. The resulting unrest led to the assassination of Crown Prince Gaul Panteer several years later, and sparked the beginning of a civil war that continues to be fought across the planet to this day.
Alderaan had long been recognized as one of the Galactic Republic's most notable member worlds. The planet's inhabitants worked diligently to promote and safeguard peace in the galaxy. During the Great War, however, the Sith Empire invaded the world and overcame its defenders; the people of Alderaan faced an opponent that threatened to destroy the freedoms they held dear.
The invasion of Alderaan was ultimately brought to a halt by the combined efforts of the Republic and the Jedi Order. By this time, however, the people of Alderaan had become enraged by the Sith occupation of their world; the people abandoned their hopes for peaceful solutions and raised their voices in support of war. The people's new-found thirst for vengeance proved so great that when the Republic signed the Treaty of Coruscant several years later, Crown Prince Gaul Panteer marched from the Senate in outrage.
Shortly after the Treaty was signed, Alderaan formally seceded from the Galactic Republic. The people's reaction to this decision were mixed, but order was maintained for the next several years. This relative peace was finally shattered, however, when the Crown Prince was assassinated. The Queen died several days later, leaving House Panteer with neither a leader nor an heir. When Alderaan's parliament proved incapable of deciding which noble house should gain the throne, the planet erupted into civil war. House Thul returned from exile and, with the support of the Sith Empire, has begun to rebuild its former holdings. In opposition of House Thul, House Organa began to accept support from the Galactic Republic. A third faction, led by former general and self-declared King Bouris Ulgo, seeks to claim the throne through direct military power. Neither the Republic nor the Empire has officially dispatched military forces to Alderaan, but both government are interested in the eventual outcome of the planet's current hostilities.
- Main article: Alderaan Civil War
Neither the Galactic Republic nor the Sith Empire admits an official presence on Alderaan. Despite this, both factions are locked in a battle for control of the planet's defensive weaponry; Alderaan's planetary defense cannons would strengthen the efforts of any noble house that controls them, and both the Republic and the Empire seek to deliver this prize to their respective allies in the civil war.
- Main article: Alderaan/Codex entries