Alan Roderick Haig-Brown DSO (6 September 1877 – 25 March 1918) was a British Army officer and author who served as commander of the Lancing Officers' Training Corps and later fought in the First World War.

[1] Haig-Brown was the son of William Haig Brown, headmaster of Charterhouse School, where he was born on 6 September 1877.

[3] Haig-Brown commanded the Lancing Officers' Training Corps until 1915, by which time the British Army was fighting in the First World War.

[3] Haig-Brown was appointed a temporary lieutenant colonel in September 1916 and given command of the battalion.

[3] He was killed by machine-gun fire whilst conducting a rear guard action on the Bapaume-Sapignies road, France on 25 March 1918, the first day of the German spring offensive.