I want to take my existing saxons and vikings and morph them into a Byzantine army with mercenary allies. I'm not really familiar with the Eastern side of the Roman empire though so I have a few questions before investing in the army list book: Approximately when did these sorts of mercenaries serve...

My rule book is in the post but obviously I won't get the late roman army lists for a few more months yet. But there's nothing wrong with planning in advance, so can anyone who's seen the beta lists give me some thoughts on whether I can make a legal army with the following - this will probably be s...