Jim Raynor was the senior Confederate officer on Mar-Sar at the time of the first Zerg invasion of this world. Despite the fact that he bravely fought against alien aggressors and saved many lives, he was arrested at the Backwater base under the pretext of destroying Confederate property. When he was subsequently released by the "Sons of Korhal" — a group of revolutionaries, opponents of the Confederation, led by Arcturus Mengsk—Raynor decided to fight on their side.