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 movement Britain, United States and Germany, vying for control of the Pacific nation. The country became German Samoa (1900–1914) followed by New Zealand colonial rule during which the Mau gathered national support. A key event occurred in 1908, in a dispute between the German colonial administration and the "Malo o Samoa", or Samoan Council of Chiefs, over the establishment of a copra business owned and controlled by native Samoans. The dispute led to the eventual formation of a resistance movement called "Mau a Pule" on Savai'i by Lauaki Namulau'ulu Mamoe, one of the Samoan leaders from Safotulafai who was deposed by