Tōseiha, or Control Faction (統制派 Tōseiha ) was a political faction in the Imperial Japanese Army, active in the 1920s and 1930s.
Led by General Kazushige Ugaki, along with Hajime Sugiyama, Koiso Kuniaki, Yoshijirō Umezu, Tetsuzan Nagata and Hideki Tōjō, the Tōseiha was a grouping of officers united primarily by their opposition to the Kōdōha faction led by General Araki Sadao. The name "Tōseiha" was actually a pejorative coined by (and only used by) Kōdōha members and sympathizers.
The Tōseiha attempted to represent the more politically conservative (moderate) elements within the army, as opposed to the radical and ultranationalist Kōdōha. The Tōseiha was a non-regional coalition, as opposed to Araki's reintroduction of regional politics into army promotions and policy decisions. Many members were promising graduates of the Imperial Japanese Army Academy and Army Staff College, and were concerned about Araki's emphasis of the spiritual élan of the army over modernization and mechanization. Whereas the Kōdōha was strongly supportive of the hokushin-ron strategy of a preemptive strike against the Soviet Union, the Tōseiha favored a more cautious defense expansion.