She was a recipient of the Florence Nightingale Medal, honoured as a member of the Royal Red Cross and was appointed a Commander of the Order of the British Empire.

[1] In February 1940, she was posted as matron to the 2/2nd Australian General Hospital and in April sailed to the Middle East, serving in Gaza Ridge, Palestine and Kantara.

[1] In 1945 Sage was amongst 100 recipients at an investiture at Government House Canberra, where she was presented with the Royal Red Cross by the Duke of Gloucester.

[1][5] After Sage was demobilised from the AIF in 1947, she became Lady Superintendent of the Women's Hospital, Carlton, and continued with her role as matron-in-chief, Citizen Military Forces part time.

While she was widely regarded for her role in the Second World War, it was reported at the time that members of the Liberal party felt that "Flinders cannot be won by a woman candidate".