Me favourite faction be England.
I have me own way of fighting, as methinks most of thou do.

I would have grand infantrymen numbers (mostly 80% of the army, when I can do so) disposed through the largest terrain, but while maintaining the thickest lines I can. Some longbows or whoever archers I have, I put them behind the army (if they can inflict greater damage there) or in front of it (if their stakes - if accessible - can struck down fool enemy cavalrymen charge).

- only to justify meself, if thou think I am doing wrong, I win entire campaigns with less than 6 or 8 battles lost, on very hard difficulty -

Curiously, I get more cavalrymen when I am besiegeing a settlement