Two secret clauses left out any of the Anti-Japanese Volunteer Armies from this Peace Preservation Corps and provided for any problems that could not be fixed by the Peace Preservation Corps to be arranged by agreement between the Japanese and Chinese governments. Having lost every major battles and much territory, and with the Chinese government under Chiang Kai-shek more concerned with fighting the Chinese Communist Party than the Japanese, the Chinese government agreed to all demands. Furthermore, the new demilitarized zone was mostly within the remaining territory of the Manchurian warlord Zhang Xueliang.