Rudolph Lambart, 10th Earl of Cavan

Field Marshal The Right Honourable The Earl of Cavan KP GCB GCMG GCVO GBE DL
Nickname(s)	"Fatty"[a]
Born	(1865-10-16)16 October 1865 Ayot St Lawrence, Hertfordshire, England
Died	28 August 1946(1946-08-28) (aged 80) London, England
Allegiance	United Kingdom
Service/branch	British Army
Years of service	1885–1913 1914–1926
Rank	Field Marshal
Unit	Grenadier Guards
Commands held	Chief of the Imperial General Staff Aldershot Command XIV Corps Guards Division 50th (Northumbrian) Division 4th (Guards) Brigade 2nd London Brigade 2nd Battalion, Grenadier Guards
Battles/wars	Second Boer War First World War : Italian Front
Awards	Knight of the Order of St Patrick Knight Grand Cross of the Order of the Bath Knight Grand Cross of the Order of St Michael and St George Knight Grand Cross of the Royal Victorian Order Knight Grand Cross of the Order of the British Empire Mentioned in Despatches Commander of the Legion of Honour (France) Grand Officer of the Order of the Crown (Belgium) Grand Officer of the Order of Saints Maurice and Lazarus (Italy) Grand Officer of the Military Order of Savoy (Italy) War Cross for Military Valor (Italy) Army Distinguished Service Medal (United States) Order of Wen-Hu (China)
Spouse(s)	Caroline Inez Crawley ​ ​ (m. 1893; died 1920)​ Lady Hester Joan Byng ​ ​ (m. 1922)​

Field Marshal Frederick Rudolph Lambart, 10th Earl of Cavan, KP, GCB, GCMG, GCVO, GBE, DL (16 October 1865 – 28 August 1946), known as Viscount Kilcoursie from 1887 until 1900, was a British Army officer who served as Chief of the Imperial General Staff, the professional head of the British Army, in the 1920s. After being commissioned into the Grenadier Guards in 1885, he served in the Second Boer War as a company commander, then served during the First World War as a brigade, divisional, corps, and army commander, and later advised the British Government on the implementation of the Geddes report, which advocated a large reduction in defence expenditure; he presided over a major reduction in the size of the British Army.

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