Operation Anvil (Mau Mau Uprising) authorities. Within 48 hours the British had detained 206 known insurgents. In the following weeks over 50,000 Africans were detained and questioned. Nevetheless, numerous leading figures among the rebels managed to escape from Nairobi into the countryside. The operation ended on 26 May. Operation Anvil marked a turning-point in the British campaign against the Mau Mau. The action left the insurgents mostly isolated in the forested mountains of Nyandarwa and Kirinyaga without access to supplies and the assistance of passive supporters. It proved to be the most sophisticated undertaking of the Kenyan Emergency. In the following weeks Mau Mau activity
Mau Mau Uprising series of major economic, military and penal initiatives. The second stage had three main planks: a large military-sweep of Nairobi leading to the internment of tens of thousands of the city's suspected Mau Mau members and sympathisers (see "Operation Anvil" below); the enacting of major agrarian reform (the Swynnerton Plan); and the institution of a vast villagisation programme for more than a million rural Kikuyu (see below). In 2012, the UK government accepted that prisoners had suffered "torture and ill-treatment at the hands of the colonial administration". The harshness of the British response was inflated by two factors. First, the