Comparing troop numbers to historical accuracy

[Derfasciti]

In the Middle ages, armies were typically very small. England, for instance found it hard to keep a standing army at all. During the Hundred Years War the king of France was only able to form a standing army of several hundred(or thousand. It's been a while since I read the book.) And this was considered a great accomplishment.

That being said, there were occasions when genuinely pretty large armies took the field against one another. Contemporaries of the time say that the historic battle of Bannockburn between Scotland and England fielded about 30,000 and 100,000 troops respectively. However, most modern-day historians believe that the numbers were more like 5-10,000 and 20-35,000. Still, a fairly large battle.
I wish the game would allow it. But surely my computer would never run it