Sir Ronald Hugh Grierson served in an infantry battalion of a regiment that was created as part of what?
Ronald Grierson: Sir Ronald Hugh Grierson (6 August 1921 – 23 October 2014) was a German-born British banker, businessman, government advisor, and British Army officer. Ronald Grierson:  After service in the Black Watch, attached to the Special Air Service and mentioned in dispatches, during World War II, he became a lieutenant-colonel in the post-war SAS. Black Watch: The Black Watch, 3rd Battalion, Royal Regiment of Scotland (3 SCOTS) is an infantry battalion of the Royal Regiment of Scotland. Black Watch:  The regiment was created as part of the Childers Reforms in 1881, when the 42nd (Royal Highland) Regiment of Foot (The Black Watch) was amalgamated with the 73rd (Perthshire) Regiment of Foot.
Childers Reforms