Advances in weaponry during the Middle Ages made it easier for humans to slash, stab, flay, crush and chop each other into bits on the battlefield, which is why fantasy and history nerds still think medieval warfare is king.
Of course, those knights riding around all super shiny help sell the cool, and armies laying siege to castles with catapults and stuff, now that must have been really cool to watch...as long as you weren't inside the castle.
Sam O'Nella Academy made a video dedicated to the cool and creative weapons and tactics conceived during the medieval era, it's crudely drawn yet totally worthy of huzzah. (NSFW due to language)
-Via Tastefully Offensive