Malcolm MacLeod (British Army officer)

Major General Malcolm Neynoe MacLeod, CB, DSO, MC (23 May 1882 – 1 August 1969) was a senior British Army officer who served as Director General of the Ordnance Survey from 1935 to 1943.

Malcom MacLeod
MacLeod in 1934
Born	(1882-05-23)23 May 1882
Died	1 August 1969(1969-08-01) (aged 87)
Allegiance	United Kingdom
Branch	British Army
Years of service	1900–1943
Rank	Major General
Unit	Royal Engineers
Commands	Ordnance Survey 4th Field Survey Battalion
Battles / wars	First World War Second World War
Awards	Companion of the Order of the Bath Distinguished Service Order Military Cross Mentioned in Despatches

In 1935, he started the retriangulation of Great Britain, an immense task that involved erecting concrete triangulation pillars (trig points) on prominent hilltops throughout Britain. As well as being an immense physical task, it was also a complex mathematical undertaking. MacLeod can fairly be said to be the creator of the Ordnance Survey in its modern form.

MacLeod was commissioned in the Royal Engineers in 1900, serving in India from 1902 until 1914. During the First World War, he commanded the 4th Field Survey Battalion and was awarded the Military Cross in the 1917 New Year Honours. He became Chief Instructor at the School of Artillery, Larkhill in 1920, serving until 1923 when he moved to the Ordnance Survey. After attending the Staff College, Quetta.^[1] he was Director-General of the Ordnance Survey in 1935, retiring in 1943.