Cattle raiding, a longstanding practice among pastoralists in South Sudan, was historically governed by cultural authorities and ritual prohibitions. However, after decades of on-and-off integration into armed forces, raiders are now heavily armed, and military-style attacks claim dozens if not hundreds of lives at a time. Beginning with the emergence of the infamous Lou Nuer “White Army” in the Bor Massacre of the early 1990s, in which Riek Machar mobilized local herders to mount a…