I have just released a new, full-color edition of Comitatus Wargames Rules, which is lavishly illustrated with a mix of photographs, diagrams, examples and tabletop action.
Comitatus is a complete set of wargames rules designed to simulate warfare in Europe and the Mediterranean from about AD 250 to 1100. They have been primarily designed with barbarian migrations period in mind, but the scope of the rules covers Dark Age warfare through to the period of the First Crusade.
These rules deliver a fast-moving game that gives a real feel for the period, and is relatively easy to master. Full-scale battles representing tens of thousands of troops on each side can easily be fought to a conclusion in three to four hours, while still retaining the special characteristics of Dark Age warfare.