An overview of the units of active backups of the state of New York:
DD.03.1922-DD.11.1925 the Main headquarters of the air service / General Headquarters Air Service
15.10.1921-30.09.1933 517. command squadron / 517th Headquarters Squadron
15.10.1921-05.09.1928 First Army Signal Service Headquarters
DD.03.1922-DD.11.1925 the Main headquarters of the air service / General Headquarters Air Service
15.10.1921-30.09.1933 517. command squadron / 517th Headquarters Squadron
15.10.1921-05.09.1928 First Army Signal Service Headquarters