During
World War II, Lady Martha joined the
Auxiliary Territorial Service in 1941. She later joined an anti-aircraft battery defending
London during
the Blitz. After the war, she went on to command the
WRAC Battalion supporting
51st (Highland) Division in
Perth in the 1960s, rising to the rank of
lieutenant-colonel. In May 1949, she served as a
maid of honour during the
Duke and
Duchess of Gloucester's stay at the
Palace of Holyroodhouse during the Duke's term as
Lord High Commissioner to the
General Assembly of the Church of Scotland. In 1968, after leaving the army, she joined the Scottish prison service, first as assistant governor of
HM Prison Greenock. When
HM Prison Cornton Vale opened in 1975 she became its first governor. She returned to Cornton Vale in 2015 for its 40th anniversary, planting a tree to mark the occasion. To mark her 100th birthday in 2021,
Fife Council installed benches in
Charlestown, Limekilns and Pattiesmuir. Bruce lived her whole life in Limekilns, renting a small house on the Brooomhall estate. She died on 22 January 2023, at the age of 101. == References ==