Question: In which city was born the man who wrote a book about a British Army officer who fought in the Second Boer War?

Context articles: Second Boer War
Francis John Fox
Rudolph Lambart, 10th Earl of Cavan
Victor Wallace Germains
Herbert Kitchener, 1st Earl Kitchener
Deneys Reitz
Charles W. H. Douglas
Victor Sellheim
William Nicholson, 1st Baron Nicholson
William Henry Birkbeck

The Second Boer War (Dutch: "Tweede Boerenoorlog" , Afrikaans: "Tweede Vryheidsoorlog" , "Second Freedom War"), known variously as the Boer War, Anglo-Boer War, South African War or Anglo-Boer South African War, started on 11 October 1899 and ended on 31 May 1902.
 Britain defeated two Boer states in South Africa: the South African Republic (Republic of Transvaal) and the Orange Free State.
 Britain was aided by its Cape Colony, the Colony of Natal and some native African allies.
 The British war effort was further supported by volunteers from the British Empire, including Southern Africa, the Australian colonies, Canada, India and New Zealand.
 Inside Britain and its Empire there also was significant opposition to the Second Boer War.
Francis John Fox (20 September 1857 – 27 February 1902) was a New Zealand soldier and farmer.
 Born in Ireland into a family with a military tradition, he was commissioned in the British Army in 1876.
 An artillery officer, he served in British India, the First Boer War in South Africa and in Egypt.
 After holding a series of staff positions, he was appointed Commandant of the New Zealand Permanent Militia in 1892.
 He soon came into conflict with the New Zealand Prime Minister, Richard Seddon, over implementation of a number of recommendations that had been made to improve the state of New Zealand's defences.
 His position changed to an advisory role which ended in 1896.
 Having retired from the army, he turned to farming in Canterbury.
 Attempts in 1899 to join New Zealand military units being raised for service in the Second Boer War were rebuffed.
 He died in 1902 of a haemorrhage.
Field Marshal Frederick Rudolph Lambart, 10th Earl of Cavan, (16 October 1865 – 28 August 1946), known as Viscount Kilcoursie from 1887 until 1900, was a British Army officer and Chief of the Imperial General Staff.
 He served in the Second Boer War, led XIV Corps during the First World War, and later advised the 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.
Victor Wallace Germains (born June 1888 in the Fulham district of London) was an English writer.
 He wrote several books on the military and foreign policy, including on Kitchener and Churchill.
Field Marshal Horatio Herbert Kitchener, 1st Earl Kitchener, ( ; 24 June 1850 – 5 June 1916) was a senior British Army officer and colonial administrator who won notoriety for his imperial campaigns, most especially his scorched earth policy against the Boers and his establishment of concentration camps during the Second Boer War, and later played a central role in the early part of the First World War.
Deneys Reitz (1882—1944), son of Francis William Reitz, was a Boer soldier who fought in the Second Boer War for the South African Republic against the British Empire.
 After a period of exile in Madagascar he returned to South Africa, where he became a lawyer and founded a major South African law firm.
 In the First World War he fought for the Union of South Africa against the German Empire, and then was an officer in the British Army, commanding several battalions.
 In later life he was a politician.
General Sir Charles Whittingham Horsley Douglas (17 July 1850 – 25 October 1914) was a British Army officer who served in the Second Anglo-Afghan War, the First Boer War, the Suakin Expedition, the Second Boer War and the First World War.
 He was Chief of the Imperial General Staff during the first three months of the First World War but died from strain and overwork without having any meaningful influence on the outcome of the war.
Major General Victor Sellheim {'1': ", '2': ", '3': ", '4': "} (4 May 1866 – 25 January 1928) was an Australian military officer during the Second Boer War and World War I.
 Sellheim fought in the Second Boer War with Chauvel's Mounted Infantry and fought in the Battle of Modder River.
 For his actions during the war, Sellheim became a Companion of the Order of the Bath.
 After serving in a variety of staff positions, he became Quartermaster general of the Australian Military Forces in 1912 and two years later was Adjutant general.
 Between 1914 and 1916 he oversaw the Australian Imperial Force base at Cairo.
 He became the Adjutant general again.
 After the end of World War I, Sellheim became Quartermaster general in 1920 but resigned in 1927 to become Administrator of Norfolk Island, where he died on heart failure in 1928.
Field Marshal William Gustavus Nicholson, 1st Baron Nicholson {'1': ", '2': ", '3': ", '4': "} (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.
Major-General Sir William Henry Birkbeck, {'1': ", '2': ", '3': ", '4': "} (8 April 1863 – 16 April 1929) was a British Army officer and administrator.
 He served in the Second Boer War and First World War, and was the director of remounts at British Army Headquarters from 1912 to 1920.