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 of atrocity and excess on both sides, a dirty war from which no one emerged with much pride, and certainly no glory." Historian Daniel Goldhagen describes the campaign against the Mau Mau as an example of eliminationism, though this verdict has been fiercely criticised. The total number of deaths attributable to the Emergency has been a source of dispute: Caroline Elkins claims it is "tens of thousands, perhaps hundreds of thousands". Elkins numbers have been challenged by the British demographer John Blacker, who demonstrated in detail that her numbers were overestimated, explaining that Elkins' figure of 300,000 deaths "implies that