On the single board game, it's best to charge aggressively with the infantry. Infantries usually start flat. Here's a video explaining how best to develop your infantry into an attacking column, sever the formation of the opposing infantry, and penetrate into the opponent's backfield.
https://www.youtube.com/watch?v=NOinK1yr99E
Infantry Maneuvering
Check out this video explaining how to move and capture with the infantry.
https://www.youtube.com/watch?v=dfKQGqyPVsA
Learn how to use the knights
Check out this short video explaining the ways in which a formation of knights can be maneuvered.
