According to an article entitled Reiving, Feuding and Primitive Warefare, written by P.J. Nebergall, The Anglo-Scottish REIVERS were border bandits of the sixteenth and seventeenth century. Along with raiding, they carried on DEADLY FEUDS with each other. Nebergall provides his insight on Reivers and Reiving by closely examining their lifestyle as a means to explain this form of primitive warfare.
As George MacDonald Fraser explains in his book, The Steel Bonnets, The Story of Anglo-Scottish Border Reivers:
"The great border tribes of both Scotland and England feuded continuously among themselves. Robbery and blackmail were everyday professions; raiding, arson, kidnapping, murder, and extortion were an accepted part of the social system. While the monarchs of England and Scotland ruled the comparatively secure hearts of their kingdoms, the narrow hill land between was dominated by the lance and the sword. The tribal leaders from their towers, the broken men, and outlaws of the mosses, the ordinary peasants of the valleys, in their own phrase, 'shook loose the Border'. They continued to shake it as long as it was political reality, practising systematic robbery and destruction on each other. History has christened them the Border Reivers. The Border lands are home to the descendants of the notorious Reivers and their marauding families: the Armstrongs, the Grahams, the Irvines, the Kerr's, the Scotts, the Elliots, the Maxwells, the Johnstones, the Musgraves, the Bells, the Fosters, the Charltons, the Nixons and the Robsons to name just some of the more feuding elements of Border society in the 16th century. The area is liberally dotted with castles, stately homes, the ruins of historic abbeys, fortified farmhouses (bastles), the scattered remains of pele towers and the atmospheric remnants of abandoned hamlets or howfs, hidden up remote side valleys. The many towns and settlements that were raided, the fortified churches and the defensive walls and dykes dating back to Elizabeth I and her forbears. The fields of battle and the Reiver graveyards all bear testament to the turbulent history that marked these lands and those times. The brutal activities of the warring families and the indiscriminate plundering and merciless cruelty that drove fear deep into the very souls of ordinary Border folk. "