In the early 1950s militant nationalism emerged in the United Kingdom's colony of
Kenya in East Africa. By 1952 guerrilla attacks against white settlers and indigenous moderates, perpetrated by the "
Mau Mau" movement, had proliferated the region occupied by the
Kikuyu. On 20 October the colonial governor declared a state of emergency, initiating efforts by the British military to put down the insurgency. The first months of the British campaign were plagued by a lack of discipline, communication, coherent strategy, and useful intelligence and little progress was made against the Mau Mau. An assault on the
Naivasha police station and
a massacre of civilians in the village of Lari in March 1953 dramatically escalated the conflict. Mau Mau activity also began to surface in the city of
Nairobi, which had a large
Kikuyu population. Many Kikuyu were sympathetic to the Mau Mau cause and provided the insurgents with supplies. They also housed them, thereby facilitating attacks in the city and the neighboring
Kiambu District. (centre), observing operations against the Mau Mau. Erskine played a leading role in planning and carrying out Operation Anvil. In June General
George Erskine was dispatched to Kenya to assume control over British forces. He immediately began instituting reforms and organised a series of attacks against the Mau Mau. In January 1954 the British captured rebel leader
Waruhiu Itote, who gave them critical information about Mau Mau deployments and strategy under interrogation. Two months later the colonial command structure was overhauled, increasing decision-making efficiency and granting Erskine greater influence in the process.
Prelude Erskine intended on relocating all Kikuyu,
Embu, and
Meru people from Nairobi, but the colonial government rejected the plan, citing potential harm to the local economy and administration. The operation was based on one British security forces had conducted in
Tel Aviv,
Palestine. Its legality was assured by the Emergency Regulations and the Control of Nairobi Regulations of 1954, the latter of which permitted the colonial governor to issue "Evacuation Orders" to remove and detain individuals from the city so they could be screened for connections with the Mau Mau. Four battalions were earmarked for the action. In the weeks preceding the operation rumors circulated among the African population that Nairobi was due to be subjected to a security sweep. Some insurgents moved to the outskirts of the city and were thus outside the cordoned area. == Operation ==