The noblemen rode horses and were heavily armed and armored. What the peasants did was flood the battlefield on the eve of battle with water from a nearby river. It was the dead of winter, and the water froze overnight. When the oppressors sallied forth on the following morning, the horses slipped and fell all over the ice. The peasants came to battle shod for walking on ice, and dispatched the lot of them with ease.
History is full of examples that can be similarly turned to useful advantage.
One must be selective in any case regarding what one teaches. An important subject, nowadays especially, is foreign languages. It would be helpful, at the outset, to offer as a new academic course an overview of general linguistic trends. Take, for example, the Romance, or Latin-based, languages. These, unlike English, assign a gender to every noun.