He was commissioned into the
10th Hussars Promoted to
lieutenant in 1915, he won the
Military Cross in 1918, and was shortly afterwards promoted to
captain. The citation for his MC, which appeared in
The London Gazette in September 1918, reads as follows: From 1925 to 1926 he was
ADC to the
Governor-General of Canada. He retired in 1927. He rejoined the Army in the
Second World War, serving in
Italy and reaching the rank of
lieutenant colonel. He was
Unionist Member of Parliament (MP) for
Roxburgh and Selkirk from 1935 to 1950, taking over the seat from his elder brother
Walter on the death of their father. He was a
Deputy Lieutenant of Roxburghshire from 1945. ==Personal life==