D&D arms and armor has very little connection to history. Indeed, many historical fighting styles are either impossible or very difficult under the standard rules. (This is true in both 3/3.5 and 4th. I don't know how true it is in earlier editions.) Similarly, arrows are aren't nearly as deadly as they were historically. And then you have ridiculous things like the "dire flail" which seems to be a recipe for getting yourself hurt real fast.