Archaeology / Photogrammetry / LiDAR / Roman military archaeology / Roman military history / Roman Army / Digital Photogrammetry applied to Archaeology / Archaeology of Roman Hispania / Archaeological survey / Aerial Photogrammetry / Aerial Photography / LiDAR for Landscape Archaeology / Roman Archaeology / Historical Photography / Roman Army / Digital Photogrammetry applied to Archaeology / Archaeology of Roman Hispania / Archaeological survey / Aerial Photogrammetry / Aerial Photography / LiDAR for Landscape Archaeology / Roman Archaeology / Historical Photography