Thus, after the 2.26 Incident, they seized the opportunity to purge Araki Sadao, Masaki Jinzaburo and other Kodo-ha officers who had indulged the young officers from activity duty and had the young officers courtmartialed and shot (Masaki was courtmartialed, too, but let off for political reasons).

Re Ishiwara: Mark Peattie's book remains unsurpassed for English-language works. I've published a short commentary on his Pan-Asianism and translation (excerpt) from a pamphlet by his Far Eastern League in the Routledge Handbook of Modern Japanese History.