Sector Command was a department of the Alliance to Restore the Republic, headed by the Chief of Sector Command. Sector Command was in charge of the various Alliance Sector Forces throughout the galaxy, coordinating their efforts and activities. Hundreds of personnel and droids staffed Sector Command, and it was one of the largest departments in the Alliance. Sector Command was also responsible for creating and installing new Sector Forces on planets without established rebel activity, providing the core of trained officers and staff required to run the Sector Force until recruited natives were in place to take over.