The BCS games are very good, and quite different. There are a lot of smaller scenarios but it is a reasonably complex system. Lucky for me, my buddy is very into the system, so he has been showing me how to play on Vassal.
he has also done quite a few youtube vids on this game, amongst others. Here is a link;
“O Lord God, let me not be disgraced in my old days.”
'We few, we happy few, we band of brothers'