Major-General Sir Reginald Salmond Curtis, KCMG, CB, DSO (21 November 1863 – 11 January 1922) was a British army officer, responsible for the reorganisation and modernisation of the Royal Engineers during the First World War.

[2][3][4] From 1890 to 1893 Curtis served in the Egyptian Army, and was present at the capture of Tokar, in the Sudan campaign of 1891.

For his service with the paramilitary South African Constabulary during the later part of the war, he received a brevet promotion to lieutenant-colonel on 22 August 1902.

[3] After returning to Britain, Curtis was posted to Edinburgh and Aldershot before becoming commandant of the Royal School of Signals in 1912–13.

This enormous increase was not merely a multiplication of existing organizations, but the creation of a vast number of new branches of the Engineers' arm, of a nature previously unforeseen, to suit the advance of science applied to war.

The raising and organizing of all these units, with their varying requirements and their special officers, was a gigantic task.

.In 1917, Curtis was appointed to command the Cromarty naval base defences, before taking charge of administration at Aldershot.