Career
She served with the British Army"s Nursing Service from December 1887 where she nursed at the Royal Victoria Military Hospital, Netley, before she was posted to Egypt from 1888-1894. In 1903 she was appointed Principal Matron at Pretoria, South Africa. At the time of her appointment there were 14 military hospitals serving soldiers and their families.
A central duty of her position was to supervise and inspect each hospital.
Upon her appointment as Matron in Chief, the British Journal of Nursing reported:
Mission Keer has many qualifications for the high office to which she has been appointed. Her quiet, modest confidence, confidence evidently born of knowledge, cannot fail to beget the conviction that the choice which placed the reins of government in this important position in her hands and that she will maintain the dignity and prestige which the Service has acquired during the tenure of office of the present Matron-in-Chief Mission Sidney Browne, R.R.C. During her time as the Matron in Chief Mission Keer was involved in improving the pay, allowances and conditions of the nurses of the QAIMNS and making changes to the Military Families Hospitals.
Keer served as Matron-in-Chief of the QAIMNS from 5 April 1906 to 5 April 1910, retiring two months later. Caroline Keer died on 29 December 1928, aged 71, at her home in West Worthing, Surrey from undisclosed causes.