Roman military equipment conference Rijksmuseum van Oudheden 15-16th september 1994 ; Archeon 17th september mavors roman army researches Bauten und Katapulte des römischen Heeres / von Dietwulf Baatz Service in the Roman army / Roy W. Davies ; edited by David Breeze and Valerie A. Maxfield Roman military equipment : from the Punic Wars to the fall of Rome / M.C. Bishop and J.C.N. Coulston jones's series of british historians history of the decline and fall of the Roman Empire / by Edward Gibbon Roman fort / Peter Connolly