Inside the world of longsword fighting
Looks like great fun!I doubt it has close resemblance with medieval long sword fighting, though :-)It must have been a lot slower fighting in leather, chainmail or plate armor than in this ultra light modern equipment.And, I assume a medieval fighter would take far smaller chances than these modern hobbyists knowing a counter blow could be (almost surely would be) fatal.Also, these guys fight one on one. But in a war you would have to guard yourself from blows and cuts not just from one  enemy but from a crowd of enemy soldiers, left and right.The guy you were fighting might be using a sword or he might have another weapon. Maybe he was using a shield and you didn't. And if he had a sword, he might not have read the memo that it should be max 4 feet long.And fighting on some uneven, damp meadow he might be fighting uphill or downhill, and just keeping ones balance when striking or blocking would be hard compared to fighting indoor on a floor.