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 operations against Mau Mau fighters in the forests, the British attempt to defeat the movement broadly came in two stages: the first, relatively limited in scope, came during the period in which they had still failed to accept the seriousness of the revolt; the second came afterwards. During the first stage, the British tried to decapitate the movement by declaring a State of Emergency before arresting 180 alleged Mau Mau leaders (see "Operation Jock Scott" below) and subjecting six of them to a show trial (the Kapenguria Six); the second stage began in earnest in 1954, when they undertook a