My deep ignorance of global history precludes me from glibly listing the ten most decisive battles in human history (maybe including one between Neanderthals and Humans?) but if I had to pick ten important battles which are actually gameable they would be:
Borodino (or Leipzig or Waterloo)
Blenheim (or Ramilles)
Koennigratz – probably the single most important battle in list as it determined the course of history from 1866 to 1989
Funnily enough, I’ve Wargamed all of these, some of them multiple times.
"Mistakes in the initial deployment cannot be rectified" - Helmuth von Moltke