“…For example, the Roman Empire resettled between 15,000 -30,000 peasant soldiers to its northern frontiers (Birley, 2013(Birley, , 1961Collingwood, 1921), 1 to fend off northern invaders while cultivating lands near their major forts. Khosrou I of the Sasanian Empire relied on 120,000 peasant soldiers (paighan) to guard the frontiers of his four military districts (Farrokh, 2012). Tsarist Russia ordered a large number of semi-military Cossacks to resettle in Siberia, especially at the confluences of major river and portages key to securing fur and ivory trade routes, following its conquest of the region in 1580 (Lantzeff and Pierce, 1973;Lincoln, 2007).…”