In 1922 the civilian components of the Air Board began to consolidate into the Canadian Air Force, which became part of the newly established Department of National Defence the following year and was renamed the Royal Canadian Air Force (RCAF) in 1924. Thus the facility gained the second-longest association with the nation's air defence after RCAF Station Borden. After a few name changes, the facility took the name RCAF Station Ottawa in 1936. In 1940, this name would change again to RCAF Station Rockcliffe.