Augustus's headquarters at Segisama Historical milestone · Sasamón, Odra-Pisuerga, Burgos Image of Sasamón, not of the place itself. From the Celtiberian and Roman Segisama, Augustus directed in person, in the year 26 BC, the start of the Cantabrian Wars. The Legio IV Macedonica camped there and from that site came the city of Segisama Iulia. 26 a. C. Photo: Grosasm (talk) 18:54, 18 April 2013 (UTC) (Public domain) What to see and do in Sasamón