After retiring he remained in Jamaica where he was a property owner. He became involved in local politics and contested the St Andrew Parish in the legislative council elections but was not elected.[6]
With the outbreak of the First World War, he was recalled to the army and was posted to take up a command post in South West Africa; he was also put in command of a British Expeditionary Force sent to fight the Germans in East Africa.[3][5][7] In accordance with a special remainder in the letters patent, he succeeded his younger brother as second Earl Kitchener on 5 June 1916. He left Jamaica to return to Britain in 1918.[8] After the war he moved to Kenya where he was active in encouraging the settlement of war veterans in the British colony; he also developed a number of flax-producing estates there.[2][4]
Kitchener was married in 1877 to Eleanor Fanny Lushington (died 1897), with whom he had a son and a daughter:[9][1]
- Henry Franklin Chevallier Kitchener, Viscount Broome (17 Oct 1878 – 13 Jun 1928), commanded British naval forces at the Battle of Imbros during the First World War
- Lady Nora Fanny Kitchener (1882 – 10 May 1919)
His son and heir Henry Franklin Kitchener, Viscount Broome (1878–1928) predeceased him, so on his own death in 1937 in Nairobi, Kenya, his titles passed to his grandson Henry Herbert Kitchener.
His great-granddaughter Emma Joy Kitchener (born 1962) is the wife of actor Julian Fellowes, Baron Fellowes of West Stafford, and is a lady-in-waiting to Princess Michael of Kent.