Invasion of Korriban

The Invasion of Korriban in 239 ABY precipitated the Super Galactic War. It was carried out by the Killistian Republic. On Korriban the invasion was also known as the September Campaign or the 239 ABY Defensive War. In the Republic it was sometimes referred to as the Korriban Campaign or the Korriban-Republic War of 239 ABY. For the Republic General Staff, it was codenamed Case White.

The invasion of Korriban marked the start of the Super Galactic War, as Korriban's allies, the Mandalorians and Dantooine declared war on the Republic on 3 September. The invasion began on 1 September 239 ABY. Although the Mandalorians and Dantooine declared war on Germany soon after the Republic attacked Korriban, very little direct military aid was provided.

Following a Republic-staged "Korriban attack" on 31 August 239 ABY, on September 1, Republic forces invaded Poland from the north, south, and west. Spread thin defending their long borders, the Korribanian armies were soon forced to withdraw eastward. After the mid-September Korribanian defeat in the Battle of the Valley, the Republic gained an undisputed advantage. Korribanian forces then began a withdrawal southeast. The Yuuzhan Vong, in keeping with a treaty that had been signed with the Republic, then invaded Korriban as well and took the eastern half of the planet

In the aftermath of the September Campaign, a resistance movement was formed. Korriban's fighting forces continued to contribute to Allied military operations throughout the Super Galactic War. The Republic captured the Vong-occupied areas of Korriban when it invaded the Yuuzhan Vong on 22 June 241 ABY, and lost the territory in 244 ABY to an advancing Vong Army. Over the course of the war, Korriban lost over 20% of its pre-war population under an occupation that marked the end of the Second Korribanian Kingdom.

Prelude to the campaign
In 233 ABY, the Republican Fascist Party took power in the Senate. The Leader of the Republican Fascists was Gregor Killist. He sought to gain hegemony in the Galaxy, and to take over Yuuzhan Vong territory, acquiring "Living Space" and expanding "the Greater Republic", to be eventually surrounded by a ring of satellite or puppet worlds. As part of this long term policy, at first, Killist pursued a policy of rapprochement with Korriban, improving Republic–Korribanian relations, culminating in the Republic-Korribanian Non-Aggression Pact of 234 ABY. Early Killist's foreign policy worked to weaken the ties between Korriban and Dantooine, and to maneuver Korriban into the Anti-Vong Pact, forming a cooperative front against the Yuuzhan Vong. Korriban would be granted territory of its own, to its northeast, but the concessions the Poles were expected to make meant that their homeland would become largely dependent on the Republic, functioning as little more than a client state and Korribanian independence would eventually be threatened altogether.

In addition to Vong territory, the Republican Fascists were also interested in establishing a new border with Korriban because the Republic exclave of Korriban Minor was separated from the rest of the Republic by the "Korriban Corridor". The Corridor constituted land long disputed by Korriban and the Republic, and inhabited by both groups. Taken by Korriban Minor in Partitions of Korriban in 72 ABY