loose and tight formation

[Megas Methuselah]

Dude, cavalry are awesome. you just don't know how to use them. Wait a second, I'll find some link...

Here: https://forums.totalwar.org/vb/showthread.php?t=103172

Remember, never let your cavalry get caught down in melee too long. Always pull out, and do another proper(i.e. with their spears lowered) charge, and repeat. This should be done from behind an enemy infantry while your own infantry have them anchored.