Sir George Buchanan, 21st Laird of Buchanan (died 1651) was an officer in the Scottish army during the Wars of the Three Kingdoms,[1] and also held a number of civil positions including a Commissioner to Parliament for Stirlingshire and member of the Committee of Estates.
[5] He took on these positions while he still held a command in the army and in 1645 he was given leave from Parliament to return to his regiment in which there had been disaffection.
[5] The Buchanan estates were pillaged by soldiers fighting for Montrose, and Sir George was active as a colonel of foot in Marquis of Argyll's campaign to defeat him.
[5] In 1647–1648 he refused to support the Engagement (an agreement made by a faction of the Covenanters to which he was not a member and Charles I who was by then a prisoner of the English Roundheads),[5] so he did not participate in the disastrous Preston Campaign of that year.
[5] In 1650 Sir George was commissioned as a Colonel of horse (cavalry),[5] and was, with his regiment, at the battle of Dunbar in 1650.