The Osara Mundicide, a devastation of a world, took place during the Tenth Alsakan Conflict. It also lent its name to the Osara system found in the Inner Rim. This event marked the climax of millennia of struggles for political dominance within the Republic between Alsakan, Coruscant (the Galactic Republic's capital world), and their respective allies. These conflicts began after the Republic's triumph over the Kumauri Empire circa 10,000 BBY in a war where the Kumauri Empire utilized mass-driver cannons to launch asteroids in orbital bombardment attacks against planets. Following that war, the Republic incorporated this technology into its own military, leading to its use as a devastating tactic during the Coruscant-Alsakan wars. This threat of bombardment spurred the swift advancement of planetary shields and planet-based weapons like turbolasers.
Jason Fry and Paul R. Urquhart mentioned the Osara Mundicide in their 2012 reference book, The Essential Guide to Warfare.