Borosk was a planet in the Outer Rim Territories, one of a number of worlds along the frontier of Imperial Space fortified as strongpoints against the New Republic in the last years of the Galactic Civil War. A relatively small world, its defenses included orbiting ion minefields and planetary shields, plus heavy planetary-defense turbolasers and ion cannon batteries. It was located near Yaga Minor. The heavily defended planet retained its military role after the peace with the New Republic, was used as a staging ground for the Battle of Borosk by the Imperial Remnant against the Yuuzhan Vong.