Hussite Wars

The Hussite Wars occurred when popular but controversial priest Jan Hus was executed. His followers were outraged enough to defenestrate (throw out the window) 7 members of the city council. Then the followers organized themselves into armies called Hussites. The Hussite armies used unique tactics agonist the Catholic Crusaders in the form of War Wagons (which this link to a diagram of such formations to visualize them). However, the Hussites dissolved into infighting among moderate and radical factions. Eventually, the radical factions of the Hussites were defeated.