Sir Colin was promoted Lieutenant Colonel on the 17th November 1803,
Colonel, 1st January 1812, Major General 4th June 1814, Lieutenant
General 22nd July 1830.
Colin was appointed from the 71st Regiment to the Colonelcy of the
31st on 28th March 1838. At that time the Regiment was in India
where it had been for fourteen years and sustained heavy losses
through sickness. Fresh detachments were sent out from England and
by 1842 Sir Colin’s regiment at Agra were mustering “996
bayonets and in a high state of efficiency”. He transferred
to the 45th Regiment on 12th July 1847.
had recived a cross for Albuhera, Salamanca, Vittoria and the passage
of the Nive and was severely wounded at Waterloo.