What is "toseiha"

, was a political faction in the Imperial Japanese Army active in the 1920s and the 1930s.

Led by Major General Tetsuzan Nagata, along with Hideki Tōjō, the Tōseiha was a grouping of officers united primarily by their opposition to the Kōdōha faction led by General Sadao Araki and Jinzaburō Masaki. The name "Tōseiha" was pejorative and was coined and used only by Kōdōha members and sympathizers.