I understand your point. I was thinking in terms of dueling, one on one, rather than a battlefield. Battlefield tactics have to be different because you have more than one opponent at a time and may not see the attack coming. Also, firearms, and cannon, became part of the overall mix. Still, note that two-handed broadswords were replaced by lighter weapons during the Renaissance. I can’t give you a citation because my discussions with my fencing master and others on this subject occurred decades ago. I do have books that may well have such a reference, but I don’t have time to look that up. Perhaps someone else knows such a reference.