In 1315, Duke Leopold I of Austria decided to put Europe's mutual hatred of the Swiss to good use by invading the country with a force of anywhere between 3,000 and 5,000 soldiers and cavalry. According to contemporary chronicler Johannes Vitoduranus, "The men of this army came together with one purpose, to utterly subdue and humiliate those peasants who were surrounded with mountains as with walls."
Because being a peasant wasn't humiliating enough.
Leopold's Austrian army was well-suited for battle, riding in with heavy mail and plate armor that could withstand all but the most piercing attacks. Along with heavily armored horses, the combined weight of these knights was expected to be enough to crush any pain in the ass innocent bystanders who got in their way ... which, of course, was exactly what they planned to do with them.
Their opponents were the Swiss.
The only thing the Swiss had going for them was the halberd, which was a bit of a mix between an ax, a spear and a meat hook that handled like all three weapons in one. You know ...
Like one of these.