On the wargaming point, there was a TV series a while ago where UK staff college officers refought various battles. I got the impression they were using the system actually used in training army officers. (which of course may or may not be a good one)

Anyway, "Wellington" lost Waterloo when they did this, or at least his army was driven off the field before the Prussians got there.

Can any UK poster remember the series, they did Balaclava as well. It was quite interesting. (It was NOT the horrible "Time Commanders", the generals were real army officers.)