Buchan was 25 years old, and a
second lieutenant in the 7th Battalion,
Argyll and Sutherland Highlanders (Princess Louise's),
British Army, attached to 8th Battalion during the
First World War, and was awarded the VC for an act he performed on 21 March 1918 east of Marteville,
France. He died the following day, 22 March 1918.
Citation He was buried at Roisel Communal Cemetery Extension, Roisel, Somme, France (Plot: II. L. 6) ==Medals==