The conflict known by many names, including the Valo Atrocity, the Battle of Valo, the attack on Lonisa City, the atrocity on Valo, the attack on Valo, the massacre on Valo, and the massacre at the Republic Fair, unfolded during the time of the High Republic Era when the marauders known as the Nihil launched an assault on the planet of Valo. At the time, the Galactic Republic was hosting the Republic Fair on the world, drawing guests from all corners of the galaxy. This resulted in widespread destruction on Valo, and the tragic deaths of hundreds of thousands.