Stuart was commissioned from the
Officers' Training Corps into the
Special Reserve as a probationary
Second lieutenant in the
3rd (Reserve) Battalion, Royal Scots (his probation completed in Jan 1915) and served in the war, reaching the rank of
Captain. He was awarded the
Military Cross and
Bar in 1917. He was appointed
Equerry to
HRH Prince Albert in June 1920, and was appointed a Member (4th Class) of the
Royal Victorian Order in the
1922 New Year Honours, with the award dated 3 December 1921.
Political career Stuart sat as
Member of Parliament (MP) for
Moray and Nairn from 1923 to 1959. He served as a
Lord of the Treasury from 1935 to 1941 under successively
Ramsay MacDonald,
Stanley Baldwin,
Neville Chamberlain and
Winston Churchill and was sworn of the
Privy Council in the
1939 Birthday Honours. In 1941 Churchill promoted him to joint
Parliamentary Secretary to the Treasury (Government
Chief Whip), which he remained until 1945. He continued as
Conservative Chief Whip until 1948. In 1950 he became Chairman of the
Scottish Unionist Party, a post he held until 1962. ==Personal life==