Lieutenant-General Sir James Moncrieff Grierson, ADC (Gen.) (27 January 1859 – 17 August 1914) was a British soldier. Life He was born in 1859 the son of George Moncrieff Grierson and his wife Allison Lyon Walker. Grierson was commissioned into the Royal Artillery in 1877. He served in the Egyptian War including the actions at Kassassin and Tel el Kebir, as Deputy Assistant Quartermaster General with the Indian contingent in 1882. He was Deputy Assistant Adjutant and Quartermaster General for the Sudan expedition and was involved in actions at Suakin, Hasheen and Tamai in 1885. He was Deputy Assistant Quartermaster General for 2nd Brigade during the Hazara expedition in 1888. He was appointed Deputy Assistant Adjutant General, Intelligence, at Army Headquarters in 1890 and then became Brigade Major for the Royal Artillery at Aldershot from 1895 to 1896 when he became Military Attaché in Berlin acquiring what Sir John French later described as "an intimate knowledge of the German army." He served in China during the Boxer Rebellion in 1900, and later the same year in the Second Boer War in South Africa. Lt-Col Grierson was in charge of army baggage during Roberts’ march on Bloemfontein. After returning from the war he became Assistant Quartermaster General for the 2nd Army Corps and Chief Staff Officer to Sir Evelyn Wood, commanding the corps; and was promoted to the substantive rank of colonel on 28 October 1901. In early 1902 he was ordered for temporary duty in the Remount Department. Later that year he returned to his position in the 2nd Army corps, where he was appointed a Brigadier-General on the Staff and Chief Staff Officer of the corps from 4 September 1902. Grierson was appointed Director of Military Operations at Army Headquarters in 1904. As DMO, Grierson and his deputy Robertson organised the Strategic War Game of 1905, which persuaded them that British intervention (still expected to be deployed to Antwerp at this stage) was necessary to avoid French defeat in the event of a Franco-German war. Grierson acted as umpire for the wargame. In January 1906, as the First Moroccan Crisis continued, Grierson was tasked with drawing up detailed plans for deployment of an expeditionary force to Le Havre in the event of war. Grierson and Robertson began talks with the French General Staff and with the French military attaché Colonel Victor Huguet, and that same year Grierson, Robertson and