Nice report of an exciting game.
It did set me wondering about the history. The example that sprang to my mind was the one you cite at the end, Aspern-Essling. Of course the OHW scenario only resembles that at the most abstract level. I tried to think of other Napoleonic or C18/C19 battles where the two sides were converging on a small bridgehead to either expand it or snuff it out, and I'm struggling. (Presumably because I haven't had my morning coffee yet.) Can anyone else come up with some?