On another thread, Cam wrote:
"I never understand why, if combined arms are so effective, most armies did not form mixed divisions the way a wargamer would - preferring instead to mass their cavalry in entirely separate corps."
This is something that has fascinated me for years. I've had countless discussions with friends like Mike Leggiere, Jack Gill, Rick Schneid, Mike Pavkovic, and others, and I can honestly say that none of us really have a definitive answer for it. But...
One thing we all agreed upon was that there was a big difference between theoretical TO&E, and actual battlefield practice.
For example, a French infantry division might not have cavalry attached - at that level (although one can certainly find plenty of exceptions to that) - but it did have cavalry probably pretty close-by, attached to the corps. And of course in a large battle where one might find entire Reserve cavalry corps, then sooner or later they have to be committed *somewhere*. And that somewhere is most likely a place where your infantry has already been fighting for a while.
What I'm saying is: Wargamers have traditionally focused on the beginning of the battle, and the way that units looked on paper, and probably on the ground, before the real mix-up of heavy combat began. But once they got engaged, I have a feeling that many, if not most, armies soon became combined-arms affairs, depending upon what moment of the battle we're talking about.
So what I decided to do with Lasalle was to get away from the "Historical Army on Paper" concept and go instead to the "Moment in Battle" concept. You might be an infantry commander, and those Hussars might not be theoretically under your command. But in this moment, the corps commander has shown up (or not), and committed the hussars to assist your division in this sector.
One last point with regard to different armies:
I think we have to consider the possibility that armies were structured in certain ways not only in anticipation of particular tactical situations, but also for administrative reasons. Some of these reasons make no sense to us anymore, 200 years later, since they might have to do with things like feeding horses, or the privileges of aristocratic rank, or the seniority of regiments, or whatever.
But I have a feeling that by about 1809 or so, pretty much everybody in Europe was fighting in essentially the same ways, with minor differences understandably exaggerated by wargames in order to add "flavor."
At the end of the day, was a Prussian infantry brigade really more likely to enjoy cavalry support from that supposedly "organic" light cavalry... than, say, a French infantry brigade was, from the Chasseurs attached to the corps? After all, those Chasseurs had to be *somewhere.*