Yuri Rosch was an Office of Naval Intelligence field commander who served the the United Earth Government during both the Great War and the War of Reclamation. A loyal soldier of deep personal convictions, Rosch rose to prominence first as an operative handler within the NAVSPECWAR division and then as a an operations officer for ONI's Section Three. Rosch proved himself a capable officer during the Great War, serving in both tactical and frontline capacities against the Covenant Empire and Insurrection. Following the end of the war, he was instrumental in the formation of ONI's private security force of which he himself led a large offensive task force. As part of Vice Admiral Serin Osman's sweeping reforms under the Legacy Initiative, Rosch was appointed director of the Internal Security