The Hussites of what's now modern-day Bohemia-Moravia were a formidable fighting-force of the 15th C, ruling the battlefield from their heavily-armoured, well-equipped war wagons and defeating much larger armies of opposing knights thru crossbows and arquebuses fired from prepared defensive positions in their wagons, which came to be viewed as primitive ancestors of the modern-day tank. AFAIK, their influence in this proto-tank warfare declined once they ceased to be a significant force, but WI their ideas on mobile armoured warfare had been more widely utilised ? I know that Cortes' conquistadors constructed large protected covered wagons for the siege of Tenochtitlan, but could there conceivably have been anything else ?