Gwynne-Vaughan completed her tenure as Commandant of the Women's Royal Air Force at the close of 1919.
Helen Gwynne-Vaughan's tenure as Commandant of the Women's Royal Air Force came to an end at the close of 1919, following the WRAF's disbandment in the aftermath of the First World War. Having led the organization since September 1918, she oversaw its restructuring during a critical period of demobilization as Britain transitioned from wartime to peacetime footing.
The disbandment of the WRAF reflected the broader post-war contraction of women's military roles, as returning servicemen resumed positions in the workforce and the urgent wartime need for women's auxiliary labor diminished. Nonetheless, Gwynne-Vaughan's leadership during this period had established important precedents for women's capacity to serve effectively in organized, disciplined military structures.
The experience and administrative frameworks she developed while leading the WRAF would prove invaluable two decades later, when she was called upon again — this time to establish and lead the Auxiliary Territorial Service (ATS) at the outbreak of the Second World War. Her successful stewardship of the WRAF through its difficult final year, ensuring an orderly demobilization, cemented her reputation as one of the most capable women's service leaders of her generation, and her career would go on to bridge the interwar gap between the two great women's military service organizations of the twentieth century.