The creation of a huge Imperial guard was among the many reforms introduced by Diocletian. He confined to Rome the Praetorian Guard, which he saw as corrupt and dangerous. By the end of the 4th century AD, this new Imperial guard had 91,000 troops made up of 24 vexillations of cavalry (500 each), 25 legions (1000 each) and 108 auxiliary troops (500…...