In 940, FUJIWARA no Tadabumi was appointed as seii taishogun (literally, "great general who subdues the barbarians") to subdue TAIRA no Masakado's War and sent to Togoku (the eastern part of Japan, particularly Kanto region), however TAIRA no Masakado was killed before Tadabumi's arrival.
藤原忠文は天慶2年（940年）、平将門の乱鎮圧のための征東大将軍に任ぜられ東国に向かったが、到着前に平将門は討たれていた。