Books set in 2nd C
Marcus is invalided out of the army after his first command is overrun by tribesmen stirred up by druids into a holy war; he undertakes to travel north in an attempt to retrieve the Eagle emblem of the vanished Ninth Legion, lost when under his father's command ten years before.
A well-researched and accessible window on life in Roman Britain. Believable characters populate an historical landscape. Loyalty of friends and respect for varied lifestyles and cultures.