What are the rules for movement in combat?
There are no hard-and-fast rules for combat movement in ArM5. The group combat rules mean that characters need to have a lot of freedom of movement so they can mill around and engage members of other groups, or use the Defender option (p. 173) to protect their charge. The abstract group rules are conceptually incompatible with detailed miniatures-and-graph-paper type movement rules. There are some situations where players do want to know how far someone can go in a round – for example, when two groups are standing 20 yards apart and one group wants to throw spears while the other wants to rush into melee. The intent of ArM5 seems to be to simply resolve these situations by common sense. David Chart has announced that advanced combat rules will be written in a future supplement, so help is on the way (eventually). Until then, try using the Fourth Edition combat movement rates. You can download a PDF of Fourth Edition for free.