Joint Operations School

The Joint Operations School, often abbreviated JOS, was a senior military college of the Golden Empire, located on in the former. It was created to train senior military officers and enlisted for command roles encompassing more than one service's forces.

Prior to JOS's establishment, senior military officers and Centurions who took Legate positions did so either based on their individual experience with the military or with the expectation that they would rely on their seniormost subordinates for counsel and learn as they went. Though this model functioned in the Empire's early decades, over time many senior officers began to criticize it, especially as joint operations became commonplace. Eventually, Prime Legate Sorrik authorized the creation of JOS.

JOS offered a number of courses, each targeted to specific service needs:
 * The Joint Command Course prepared senior officers in the Army, Navy, and Starfighter Corps to conduct and lead campaigns involving the forces of more than one service branch. It was heavily focused on tactics and deployment capabilities.
 * The Joint Staff Course was aimed at staff officers, and prepared them to serve joint forces such as a Legate's fleet or a Sector Magister's sector defense force.
 * The Senior Enlisted Joint Leadership Course was designed to prepare senior enlisted soldiers, spacemen, and corpsmen to lead their subordinates alongside or in conjunction with the forces of other branches, and to render informed advice to officers operating in a joint context.

Unlike the Royal Institute of Military Science, JOS did not award graduate degrees, but instead focused exclusively on practical training. As time went on and JOS became firmly established, many senior officers began to view training at JOS as a requirement for a Sector Magister position or promotion to flag rank. Although both Queen Rin Sakaros and Sorrik occasionally installed a Legate with no joint command experience or training for their own reasons, many Legates had also attended the course.

Most attendees at JOS were officers in the grade of OF-5 or above or enlisted rated EN-7 and above. Occasionally, the Prefect of the Order of Keltrayu would detail a military-oriented Centurion to JOS as well. JOS's commandant was always a flag officer; the commandant position usually rotated among the three services.