Colquhoun Grant (British intelligence officer)

Colquhoun Grant
Born 1780
Morayshire, Scotland
Died 28 September 1829
Aachen, Rhine Province, Kingdom of Prussia
Allegiance  United Kingdom
Service/branch British Army
Rank Lieutenant colonel
Unit 11th Foot and 54th Foot
Commands held Head of Intelligence
Battles/wars Waterloo, First Anglo-Burmese War
Not to be confused with British cavalry general Sir Colquhoun Grant

Lieutenant-Colonel Colquhoun Grant (1780–1829) was a British Army soldier and intelligence officer during the Napoleonic Wars.


Of a family from the Scots aristocracy, Grant, the youngest of eight brothers, was commissioned into the 11th Foot in 1795, reaching the rank of Major by 1809 when he was posted to the Iberian Peninsula under the command of Arthur Wellesley, later Duke of Wellington. In 1810 he was appointed to Wellesley's personal staff as an Exploring Officer in the Peninsula Corps of Guides, a special reconnaissance unit who spoke the local languages.[1]

Grant never thought of himself as a spy, and always rode in full uniform, often behind enemy lines, to note the positions and strength of the enemy.

Grant was captured by French forces on 16 April 1812. As he was in uniform he was treated as an officer and gentleman by his captors, who offered him parole which Grant accepted. His servant Leon, a local guide, was not so fortunate, and was shot. Grant was invited to dine with Marshal Marmont who hoped to find out more about Wellington, and who was angered by Grant's reticence. Marmont had good reason to remain suspicious of Grant, as the latter managed to send and receive secret messages while in captivity.

Marmont sent Grant to Paris for interrogation. It is clear from Marmont's correspondence that he had no intention of exchanging Grant for a prisoner of equal rank among the British, as was the custom of the time, considering him to be a spy. Grant, on seeing a copy of Marmont's letter, decided that it invalidated his agreement to parole and left him free to escape.

Grant was able to avoid recapture by passing himself off as an American officer, and spent some weeks at liberty in the streets and salons of Paris, sending intelligence reports to Wellington. He then escaped to England, rejoining Wellington in early 1814. Promoted to lieutenant-colonel he was appointed commanding officer of the Corps of Guides and Head of Intelligence for the Peninsular Army.

During the Hundred Days Campaign Grant was working as Intelligence officer in France when Wellington put him in charge of his own intelligence operations. Grant sent in a steady stream of reports regarding the build-up of French troops along the border and returned to Brussels in time to take part in the Battle of Waterloo on 18 June.

In 1821 Grant transferred to the 54th Foot as lieutenant-colonel, later commanding a brigade in the First Anglo-Burmese War

In 1829 he was invalided out of the army and his doctor Sir James McGrigor sent him to Aachen to take the waters there. On the night of 28 September 1829 he died there.[2]


His son, Walter Colquhoun Grant, also became an army officer, the youngest captain in the army at 24, before financial troubles saw him become an early settler in the Colony of Vancouver Island. He later rejoined the army, serving in the Crimean War and Indian Mutiny.[3][4]

In media

He appears as a character in Susanna Clarke's fantasy novel set in the period, Jonathan Strange & Mr Norrell.

The character of Major Michael Hogan in Bernard Cornwell's Sharpe series of novels is loosely based on Grant.

In James McGee's novel Rebellion, based on the real 'Malet Conspiracy', Grant joins forces with McGee's fictional hero, Matthew Hawkwood. Together, they take part in a plot by renegade French generals to seize control of the Empire while Napoleon Bonaparte is fighting in Russia.


  1. The Puppet Masters, John Hughes-Wilson, Cassell, London, 2004
  2. Mary McGrigor: Wellington's Spies p 257, Leo Cooper, Barnsley 2005 ISBN 1-84415-328-2
  3. "Grant, Walter Colquhoun", Dictionary of Canadian Biography, retrieved 8 September 2009
  4. The London Gazette: no. 22107. pp. 1251–1568. 24 July 1857. Retrieved 8 September 2009.
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