The 86th Brigade was a formation of the British Army. It was originally formed from regular army battalions serving away from home in the British Empire. It was assigned to the 29th Division and served on the Western Front and the Gallipoli Campaign and in Egypt during the First World War.
Order of Battle The following units served with the brigade at various time during the war:Maj A.F. Becke,History of the Great War: Order of Battle of Divisions, Part 1: The Regular British Divisions, London: HM Stationery Office, 1934/Uckfield: Naval & Military Press, 2007, .
2nd Battalion, Royal Fusiliers 1st Battalion, Lancashire Fusiliers 1st Battalion, Royal Munster Fusiliers 1st Battalion, Royal Dublin Fusiliers 2/3rd Battalion, London Regiment – attached 24 September 1915 to January 1916 16th (Service) Battalion, Middlesex Regiment (Public Schools) 1st Battalion, Royal Guernsey Light Infantry 86th Machine Gun Company 86th Trench Mortar Battery
Commanders +Commanding officersRankNameDate appointedNotesLieutenant-ColonelH. V. S. Ormond11 January 1915ActingBrigadier-GeneralS. W. Hare1 February 1915Wounded 25 March 1915ColonelO. C. Wolley-Dod25 April 1915TemporaryLieutenant-ColonelD. E. Cayley27 April 1915ActingLieutenant-ColonelH. G. Casson30 April 1915Actingcolspan=4 Brigadier-GeneralO. C. Wolley-Dod6 June 1915Invalided 13 August 1915Brigadier-GeneralD. E. Cayley13 August 1915TemporaryBrigadier-GeneralC. J. Perceval14 August 1915Brigadier-GeneralW. de L. Williams20 December 1915Brigadier-GeneralR. G. Jelf29 April 1917Invalided 16 August 1917Lieutenant-ColonelH. Nelson16 August 1917ActingBrigadier-GeneralG. R. H. Cheape24 August 1917
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