Brigadier-General John James Henry Nation, CVO, DSO (5 December 1874 – 5 November 1946)[1] was a British Army officer who became a Conservative Party politician.

He was first posted in the Orange Free State, including engagements at Vet River and Zand River; later in the Transvaal, where he was present at actions near Johannesburg and Pretoria, including the battles of Diamond Hill (June 1900) and Belfast (August 1900); and eventually in Cape Colony, south of the Orange River.

[2] Following the end of the war in June 1902, he left Cape Town for England on the SS Moravian in August 1902.

[2] Nation served in the First World War and at the headquarter of Marshal Foch 1918–19.

[4] He was married to Olive Elizabeth, widow of Capt Walter Rubens.