A new collection of the histories of the Roman Legions. The author begins by narrating all that is known about the legions of Caesars army. He uniquely organizes this using only the accounts in Caesars tales of his wars in Gaul, North Africa and in Appian's accounts of the Civil War. He follows the history of each legion as it is narrated, resisting the all too common impulse to fill in the narrative with the authors or historians supposition of the legions activities. The bulk of the book is concerned with the legions under Caesar and the Imperial Legions I through 22. It then continues with the legions raised from Gallienus, Diocletian, Constantine, and Theodosius. In the appendix section he tries to organize information about other legions raised during the Civil War of Caesar and Octavian, and a unique guide to Roman cities, villages, and forts mentioned in the work.