William Nicholson, 1st Baron Nicholson

Field Marshal The Right Honourable The Lord Nicholson GCB
Field Marshal Lord Nicholson
Born	(1845-03-02)2 March 1845 Roundhay Park, Leeds, England
Died	13 September 1918(1918-09-13) (aged 73) London, England
Allegiance	United Kingdom
Service/branch	British Army
Years of service	1865–1912 1914–1918
Rank	Field Marshal
Commands	Chief of the Imperial General Staff
Battles/wars	Second Anglo-Afghan War Battle of Kandahar Mahdist War Third Anglo-Burmese War Second Boer War First World War
Awards	Knight Grand Cross of the Order of the Bath Mentioned in Despatches Order of Osmanieh, 4th Class (Ottoman Empire)

Field Marshal William Gustavus Nicholson, 1st Baron Nicholson, GCB (2 March 1845 – 13 September 1918) was a British Army officer who served in the Second Anglo-Afghan War, the Mahdist War, the Third Anglo-Burmese War, the Second Boer War and the First World War. He became Chief of the Imperial General Staff and was closely involved in the reorganisation of the British Army in the early years of the 20th century.