About Breach & Scutcheon, from BoardGameGeek:
Breach and Scutcheon is a new set of wargames rules for the ancient and medieval period, suitable for any figure scale, that are designed to be as simple and straightforward as possible while having all you need for a full-scale ancient battle.
Breach and Scutcheon allows you to fight big battles with armies from the beginning of recorded history to the late middles ages. Games typically take two to three hours and the rules allow for the full diversity of ancient and medieval warfare without being over long or over complicated.
All tactical units have the same fixed width, and as movement distances are by base width there is no need to rebase your armies. Movement is precise. Shooting and melee are quick and easy to calculate. Combat effectiveness is based on unit morale and this degrades as the battle proceeds. The command and control rules allow you to get on with the game but without knowing exactly how many units you can move in your turn. The game mechanisms are easy to pick up, quick to use, and easy to remember.
These rules have been in development for over five years, with constant playtesting and refining throughout that time. They have been used for big battles, with six or more players on each side, and for the more usual two player games. They have been extensively play tested within the Guildford Wargames Club and outside, and been used very successfully, twice, at the Society of Ancients Conference.
-description from the publisher
