 Either Diocletian or Constantine reorganised the legions into smaller infantry units who, according to some sources, were more lightly armoured than their forebears.Their lighter armament may have been either because they "would not consent to wear the same weight of body armour as the legionaries of old" or, as in at least one documented instance, because they were prohibited from wearing heavy armour by their general in order to increase their mobility.4th-century legions were at times only one sixth the size of early imperial legions, and they were armed with some combination of spears, bows, slings, darts and swords, reflecting a greater contemporary emphasis on ranged fighting.