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 areas. Militarily, the British defeated Mau Mau in four years (1952–56) using a more expansive version of "coercion through exemplary force". In May 1953, the decision was made to send General George Erskine to oversee the restoration of order in the colony. By September 1953, the British knew the leading personalities in Mau Mau, the capture and 68 hour interrogation of General China on 15 January the following year provided a massive intelligence boost on the forest fighters. Erskine's arrival did not immediately herald a fundamental change in strategy, thus the continual pressure on the gangs remained, but he created