The Cartekelic Invasion of the Galaxy was a war fought between the forces of the highly imperialistic, xenophobic, and racist extra-galactic nation of the Cartekelic Theocratic Empire and the Galactic Federation Triumvirate from the year of 204 ABY to 209 ABY.
The invasion began when a massive invasion fleet suddenly appeared near the edge of the Outer Rim Territories. The leaders of the Galactic Federation Triumvirate were immediately warned of a possible invasion by another extra-galactic power as the galaxy fought off another extragalactic invader known as the Yuzhaan Vong just over 170 years earlier.
There were no warnings. The fleet began an assault on the Calamari system. The invaders almost immediately conquered the worlds due to the defenders' being unprepared for such an attack.