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 them "protected villages", purportedly to be built along "the same lines as the villages in the North of England", though the term was actually a "euphemism[] for the fact that hundreds of thousands of civilians were corralled, often against their will, into settlements behind barbed-wire fences and watch towers." While some of these villages were to protect loyalist Kikuyu, "most were little more than concentration camps to punish Mau Mau sympathizers." The villagisation programme was the "coup de grâce" for Mau Mau. By the end of the following summer, Lieutenant General Lathbury no longer needed Lincoln bombers for raids because