David J. Breeze has been Chair of the International Congress of Roman Frontier Studies and President of several archaeological societies in the UK. He was Chief Inspector of Ancient Monuments for Scotland from 1989 to 2005, and subsequently led the team which successfully nominated the Antonine Wall as a World Heritage Site in 2008. David has excavated on both Hadrian’s Wall and the Antonine Wall and written several books on these frontiers, on frontiers elsewhere in the Roman Empire and on the Roman army.Dr Sonja Jilek has acted since 2005 as coordinator of three multinational EU projects regarding the development of the UNESCO "Frontiers of the Roman Empire" World Heritage Site.