Listen to the Summary of Lars Brownworth's Lost to the West in 20 minutes. Please note: This is a summary & not the original book. Constantine, the first emperor of the tetrarchy, was raised up on the shields of his army comrades as Augustus in 306, and plunged the Roman world into war. The island of Britain had not often intruded on the imperial consciousness, but Constantine's elevation was a shout heard in the empire's remotest corners...