In the Star Army of Yamatai, Chujo (中将) is the rank of vice admiral. Chujo are often in charge of large portions of a space fleet, or in charge of major facilities such as capital planetary installations and star fortresses or organizations like Star Army Personnel Command. If a Chujo is placed in charge of a fleet, the Chujo will be elevated to the rank of Taisho. The rank below Chujo is Shôshô. For a full listing of ranks, see Star Army Ranks.
Soldiers must have at least 12 years in service to become a Chujo.
Officers leaving Chujo positions for reasons other than promotions, transfers, or reassignment to available positions must immediately retire from military service; in other words, admiralty ranks are tied to assignments and the Star Army does not keep admirals without assignments.