For more than a generation Karl Leyser's influential thesis, which credited Henry I with undertaking a military revolution which made possible the Saxon dynasty's rule of Francia orientalis, has dominated the scholarly literature. According to Leyser, Henry radically reformed the Saxon military by building a large force of heavily armed mounted fighting men. These men provided the means necessary to assure Saxon domination. It is argued here, by contrast, that this Saxon military revolution is a myth and that the continental Saxons, as contrasted to those in England, saw the gradual development of a heavily armed mounted fighting force following their conquest by Charlemagne in 805. The real Saxon military revolution was Henry's creation of the agrarii milites and the building of frontier fortifications.