Sir John Macdonald
|Awards||Knight Grand Cross of the Order of the Bath|
John Macdonald was commissioned into the 89th Regiment of Foot on 15 April 1795. He became lieutenant the regiment 2 February 1796, and captain 22 October 1803. He was made a major-unattached 28 February 1805, lieutenant-colonel on half-pay of the 1st garrison battalion 17 March 1808, brevet colonel 4 June 1814, major-general 1825, and lieutenant-general 1838. He served with the 89th in the Irish Rebellion of 1798, and afterwards in Minorca, Heasina, and at the blockade of Malta and capture of Valletta in 1799-1800, and throughout the campaign in Egypt in 1801. 
He was brigade-major to Sir William Cathcart, 1st Earl Cathcart in the home district in 1805, and military secretary when Cathcart was in command of the king's German legion as a separate army, in Swedish Pomerania (isle of Rugen), in 1806-7 ; and subsequently during the expedition to Copenhagenin in 1807. He was deputy adjutant-general to Sir John Hope, 4th Earl of Hopetoun at Walcheren ; and held the same post with Lieutenant-general Thomas Graham, 1st Baron Lynedoch at Codii and at the battle of Barossa (gold medal). He was military secretary to Sir John Hope when commander-in-chief at Ireland in 1812.
He was a trusted aide to the Duke of Wellington. He rose to be Deputy Adjutant-General and then in July 1830 he was appointed Adjutant-General to the Forces. In this role he was conservative in his outlook and supported the Duke of Wellington in his efforts to retain flogging as a method of discipline.
He was a connection of Flora Macdonald the Jacobite heroine. He has a brother, Lieutenant-general Alexander Mcdonald, royal artillery. Mcdonald married a daughter of Charles Graham of Williamsfield, Jamaica, by whom he left issue.
- Chichester 1893.
- "No. 18328". The London Gazette. 24 January 1827. p. 179.
- "No. 18711". The London Gazette. 27 July 1830. p. 1582.
- Radicalism and reform in Britain, 1780-1850 By John Rowland Dinwiddy Page 134 Hambledon Continuum, 1992, ISBN 978-1-85285-062-3
- "No. 20775". The London Gazette. 17 September 1847. p. 3369.
- "The Scottish Nation: Macdonald". Archived from the original on 25 October 2007. Retrieved 30 September 2013.CS1 maint: BOT: original-url status unknown (link)
- "No. 18501". The London Gazette. 1 September 1828. p. 1653.
- "No. 20306". The London Gazette. 19 January 1844. p. 181.
- Survey of London Volumes 29 and 30 By F. H. W. Sheppard
This article incorporates text from a publication now in the public domain: Chichester, Henry Manners (1893). "Macdonald, John (d.1850)". In Lee, Sidney (ed.). Dictionary of National Biography. 35. London: Smith, Elder & Co.
Sir William Keppel
| Colonel of the 67th (the South Hampshire) Regiment of Foot
Sir Herbert Taylor
| Adjutant General
Sir George Brown
Sir George Murray
| Colonel of the 42nd (Royal Highland) Regiment of Foot
Sir James Dawes Douglas