 Members or former members of the Kwantung Army were active in numerous "coup d'état" attempts against the civilian government, culminating with the February 26 Incident of 1936, where the "Kōdōha" faction was "de facto" dissolved.Although the Kwantung Army was nominally subordinate to the Imperial General Headquarters and the senior staff at the Army General Staff located in Tokyo, its leadership often acted in direct violation of the orders from the mainland Japan without suffering any consequence.Conspirators within the junior officer corps of the Kwantung Army plotted and carried out the assassination of Manchurian warlord Zhang Zuolin in the Huanggutun Incident of 1928.