(military, historical) a commander of the northeastern military bases in defense against the 蝦夷 (Emishi)

(history, government) the Six Guards since the early Heian period (左近衛府 (Sakon'efu, “Left Bodyguard”), 右近衛府 (Ukon'efu, “Right Bodyguard”), 左衛門府 (Saemonfu, “Left Gate Guard”), 右衛門府 (Uemonfu, “Right Gate Guard”), 左兵衛府 (Sahyōefu, “Left Soldier Guard”) and 右兵衛府 (Uhyōefu, “Right Soldier Guard”))

(history, government) the Five Guards under the 大宝令 (Taihōryō, “Taihō Code”) (衛門府 (Emonfu, “Gate Guard”), 左衛士府 (Saejifu, “Left Guardsmen”), 右衛士府 (Uejifu, “Right Guardsmen”), 左兵衛府 (Sahyōefu, “Left Soldier Guard”) and 右兵衛府 (Uhyōefu, “Right Soldier Guard”))

(Buddhism) think on the power of Kannon

(literally) know the other side and yourself, a hundred battles will not be perilous