Only Hisaichi TERAUCHI (a son of Masatake TERAUCHI), who served as Minister of Army, was the native of Choshu who served as any of the three secretaries of the Army, and the only Satsuma native that served as any of the three secretaries of the Navy was Eisuke YAMAMOTO (a nephew of Gonbei YAMAMOTO), who was the Commander-in-Chief of the Combined fleet.
昭和期に陸軍三長官を務めた長州出身者は陸相を務めた寺内寿一（寺内正毅の子）一人であり、海軍三長官を務めた薩摩出身者は連合艦隊司令官を務めた山本英輔（山本権兵衛の甥）一人である。