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 enaction of Swynnerton Plan. The villages were surrounded by deep, spike-bottomed trenches and barbed wire, and the villagers themselves were watched over by members of the Home Guard, often neighbours and relatives. In short, rewards or collective punishments such as curfews could be served much more readily after villagisation, and this quickly broke Mau Mau's passive wing. Though there were degrees of difference between the villages, the overall conditions engendered by villagisation meant that, by early 1955, districts began reporting starvation and malnutrition. One provincial commissioner blamed child hunger on parents deliberately withholding food, saying the latter were aware of