Fencing especially from horseback didnt get taught in any formal way such as developed from documents such as on the Continent from "Fencing Book (Fechtbuch) | German" principles moreover, it was developed as you went along such as
The Lockerbie Lick from skirmishes at the
Battle of Dryfe Sands. A powerful backhand downstrike of the sword from the saddle.
Please see
http://reivers.info/battle-of-dryfe-sands/