Operation Anvil (Mau Mau Uprising) the reserves. The "Grey" grade was made up of prisoners believed to be passive Mau Mau sympatherisers though for whom strong evidence suggesting their true loyalties was lacking. The last category, "Black", was reserved for detainees identified by the hooded informers or the Special Branch of the Kenya Police as potentially violent insurgents or terrorists. A few may have been prosecuted by the government, but most were funneled through the "Pipeline", a system of work camps, decreasing in brutality until an individual was "re-educated" and deemed safe to release on a native reserve. Operation Anvil (Mau Mau Uprising) Operation Anvil
Mau Mau Uprising conflict, postulates that the British preferred to use the term "Mau Mau" instead of "KLFA" in an attempt to deny the Mau Mau rebellion international legitimacy. Kariuki also wrote that the term "Mau Mau" was adopted by the rebellion in order to counter what they regarded as colonial propaganda. Another possible origin is a mishearing of the Kikuyu word for oath "muuma". The armed rebellion of the Mau Mau was the culminating response to colonial rule. Although there had been previous instances of violent resistance to colonialism, the Mau Mau revolt was the most prolonged and violent anti-colonial warfare in