It initially formed in July 1918, then disbanded in April 1919.

First World War On 13 July 1918, at Stenness under the Commander-in-chief of the Grand Fleet, No 28 (Orkney & Shetland Islands) Group was formed.

[2] Second World War On 1 November 1942 it reformed within RAF Technical Training Command, at 17/19 Queen Square, London, as No.

28 Group was responsible medical and administrative institutions.

28 Group controlled various schools, instituations and hospitals.