“well-positioned army besting a much larger force.”
They pinched them in and the field got muddy.
The English long bow did the trick and the rest got hacked to death.
The average distance for the longbow was over 250 yards and up to 350 yards...some say it could shoot up to 400, but I have a hard time believing that. It would not pierce armor, but the horses really caught hell. So figure the first volley taking out about half the horses and then the attackers had to go around those.
Thats with about 60 thousand shots per minute.
Saw a video where an arrow shot from a replica English longbow pierced armor. I remained skeptical because the arrow was launched at around 50 yards. However once bogged down in the muck French knights were easy targets.