The Mau Mau rebellion (1952–1960), also known as the Mau Mau uprising or Kenya Emergency, was an armed conflict in the British Colony of Kenya between the Kenya Land and Freedom Army (KLFA) and the British colonial authorities. While the KLFA was primarily composed of Kikuyu, Meru, and Embu fighters, the movement also drew support from units of Kamba and Maasai. Groups such as the Luo and Kalenjin – who had led significant earlier resistance movements against colonial establishment, such as the Nandi Resistance (1890–1906) were largely not part of the KLFA's core structure. Instead, many from these communities served in the King's African Rifles (KAR), the colonial military force through which the British maintained internal security and quelled the uprising. The KLFA fought against the British Army and the local Kenya Regiment, which included European settlers and African loyalists.
The capture of Field Marshal Dedan Kimathi on 21 October 1956 signalled the defeat of the Mau Mau, and essentially ended the British military campaign. However, the rebellion survived until after Kenya's independence from Britain, driven mainly by the Meru units led by Field Marshal Musa Mwariama. General Baimungi, one of the last Mau Mau leaders, was killed shortly after Kenya attained self-rule.
The KLFA failed to capture wide public support. Frank Füredi, in The Mau Mau War in Perspective, suggests this was due to a British divide and rule strategy, which they had developed in suppressing the Malayan Emergency (1948–60). The Mau Mau movement remained internally divided, despite attempts to unify the factions. On the colonial side, the uprising created a rift between the European colonial community in Kenya and the metropole, as well as violent divisions within the Kikuyu community: "Much of the struggle tore through the African communities themselves, an internecine war waged between rebels and 'loyalists' – Africans who took the side of the government and opposed Mau Mau." Suppressing the Mau Mau Uprising in the Kenyan colony cost Britain £55 million and caused at least 11,000 deaths among the Mau Mau and other forces, with some estimates considerably higher. This included 1,090 executions by hanging.
The origin of the term Mau Mau is uncertain. According to some members of Mau Mau, they never referred to themselves as such, instead preferring the military title Kenya Land and Freedom Army (KLFA). Some publications, such as Fred Majdalany's State of Emergency: The Full Story of Mau Mau, claim it was an anagram of Uma Uma (which means "Get out! Get out!") and was a military codeword based on a secret language game Kikuyu boys used to play at the time of their circumcision. Majdalany also says the British simply used the name as a label for the Kikuyu ethnic community without assigning any specific definition. However, there was a Maji Maji rebellion in German East Africa/Tanzania in 1905/6, ('Maji' meaning 'water' after a 'water-medicine') so this may be the origin of Mau Mau.
As the movement progressed, a Swahili backronym was adopted: "Mzungu Aende Ulaya, Mwafrika Apate Uhuru", meaning "Let the foreigner go back abroad, let the African regain independence". J. M. Kariuki, a member of Mau Mau who was detained during the conflict, suggests the British preferred to use the term Mau Mau instead of KLFA to deny the Mau Mau rebellion international legitimacy. Kariuki also wrote that the term Mau Mau was adopted by the rebellion in order to counter what they regarded as colonial propaganda.
Author and activist Wangari Maathai indicates that, to her, the most interesting story of the origin of the name is the Kikuyu phrase for the beginning of a list. When beginning a list in Kikuyu, one says, "maũndũ ni mau", "the main issues are...", and holds up three fingers to introduce them. Maathai says the three issues for the Mau Mau were land, freedom, and self-governance.
The armed rebellion of the Mau Mau was the culminating response to colonial rule. Although there had been previous instances of violent resistance to colonialism, the Mau Mau revolt was the most prolonged and violent anti-colonial warfare in the British Kenya colony. From the start, the land was the primary British interest in Kenya, which had "some of the richest agricultural soils in the world, mostly in districts where the elevation and climate make it possible for Europeans to reside permanently". Though declared a colony in 1920, the formal British colonial presence in Kenya began with a proclamation on 1 July 1895, in which Kenya was claimed as a British protectorate.
Even before 1895, however, Britain's presence in Kenya was marked by dispossession and violence. In 1894, British MP Sir Charles Dilke had observed in the House of Commons, "The only person who has up to the present time benefited from our enterprise in the heart of Africa has been Mr. Hiram Maxim" (inventor of the Maxim gun, the first automatic machine gun). During the period in which Kenya's interior was being forcibly opened up for British settlement, there was a great deal of conflict and British troops carried out atrocities against the native population.
Opposition to British imperialism had existed from the start of British occupation. The most notable include the Nandi Resistance led by Koitalel Arap Samoei of 1895–1905; the Giriama Uprising led by Mekatilili wa Menza of 1913–1914; the women's revolt against forced labour in Murang'a in 1947; and the Kolloa Affray of 1950. None of the armed uprisings during the beginning of British colonialism in Kenya were successful.
Settler societies during the colonial period could own a disproportionate share of land. The first settlers arrived in 1902 as part of Governor Charles Eliot's plan to have a settler economy pay for the Uganda Railway. The success of this settler economy would depend heavily on the availability of land, labour and capital, and so, over the next three decades, the colonial government and settlers consolidated their control over Kenyan land, and forced native Kenyans to become wage labourers.
Until the mid-1930s, the two primary complaints were low native Kenyan wages and the requirement to carry an identity document, the kipande. From the early 1930s, however, two others began to come to prominence: effective and elected African-political-representation, and land. The British response to this clamour for agrarian reform came in the early 1930s when they set up the Carter Land Commission.
The Commission reported in 1934, but its conservative recommendations ended any prospect of a peaceful resolution to native land-hunger. The government seized approximately 7,000,000 acres of fertile land in the Central and Rift Valley regions, creating the 'White Highlands' exclusively for European settlement. While land was the primary grievance for the Kikuyu, the impact was equally acute for Kalenjin communities in the Rift Valley. In Kericho, the Kipsigis and Talai clans were evicted to make way for tea plantations; under the Laibon Removal Ordinance of 1934, the British deported the Talai clan to the Gwassi Hills in Nyanza. Simultaneously, the Ogiek people were systematically displaced from their ancestral forests in the Mau Escarpment to make way for government forest reserves and settler farmland. In Nyanza, the Commission restricted over 1 million Kenyans to 7,114 square miles while granting 16,700 square miles to 17,000 Europeans. The 1925 East Africa Commission also highlighted the 'very bad' treatment of the Giriama at the coast, who were repeatedly relocated to secure Crown land for settlers.
The Kikuyu, who lived in the Kiambu, Nyeri and Murang'a areas of what became Central Province, were one of the ethnic groups most affected by the colonial government's land expropriation and European settlement; by 1933, they had had over 109.5 square miles (284 km2) of their potentially highly valuable land alienated. The Kikuyu mounted a legal challenge against the expropriation of their land, but a Kenya High Court decision of 1921 reaffirmed its legality. In terms of lost acreage, the Masai and Nandi people were the biggest losers of land.