A) You have been playing it correctly. As winner of the combat, you can follow up or stand and support the next unit in the next combat. This is straight from the author in one of the now defunct forums, but if he was on here, he would confirm. Secondly to that, if the losing unit were to break as a result, then the winners could make a Sweeping Advance/Charge into the flank of the enemy unit that is going to fight in the next combat! Those that you mention who say that you can’t are incorrect, but then, that is their choice.
B) No, you split them up as seperate combats, as per the rules. Wherever possible, you split the engagements off as seperate combats. Usually, a single engagement with multiple combatants are ones where one unit is engaged to its front and flank at the same time. It is usually obvious whether you can split them off or not.
C) Now you are mixing rules up. BP2 was updated, but Pike & Shotte, which is based on Black Powder, was put together by a different author and is only basically the same as BP1. If you are playing P&S, stick with those rules and don’t port over BP2. Same with Hail Caesar, although you may notice that some of the new rules in BP2 were taken directly from HC, like the Evade rules.
hope that helps.
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