The Centurion's Empire
Sean McMullen
 The Roman centurion Vitellan enters into multiple periods of hibernation through a concotion developed from snow-dwelling insects. He 'emerges' into various periods throughout history, many times assisting the locals in defending themselves from outside threats. Unfortunately Vitellan is not doing so well, the artificial suspension is severely injuring him. The novel continues into the future, where several organizations vie for the control of Vitellan. fr:L'Empire du centurion