Ancients Battlelines Clash (ABC) is a set of fast-play battle rules for the ancient and medieval periods. Units are classified by type (infantry, chariots, etc.), role (battleline, skrimisher, etc.), and fortitude (combination of morale, skill, and equipment), and can be further differentiated by special rules giving the missile attacks, special formations, etc. Play is IGO-UGO, with each player activating all his units during his turn, then the other player activates all his during his. An activated unit can move, charge, melee, etc., and the whole activation is resolved before going on to the next unit. (In other words, there are no separate phases where the whole army first moves, then shoots, etc.) The suggested basing is similar to the WRG standard, but the rules only really care that all units have the same frontage. —user summary