How were knights deployed in battle and how many of them would there be?

by Prince_Hektor

I understand this question can vary wildly based on time period/circumstances/location etc., but any examples from any time period are appreciated.

Rittermeister

I'm about to turn in for the night, but have a look at my post here. If there's anything you need me to clarify or expand upon, I can get to it in the morning.