The spear was a type of weapon used in the Middle Ages for its easy operation and simple fabrication. Large bodies of lancers, whether on foot or horseback, were very effective armed with spears coming out these pretty cheap in medieval battles. Variants more advanced infantry formations were medieval lances, which adicionaban knife, ax, hammer or itchy. A variant of the spear is the halberd. It is a weapon wooden shaft enastada of about two meters in length and having a cutting edge as overalls upper blade shaped cross ax blade on one side and another bib hook punctured or smaller by its opposite. The horses did not dare to charge against a disciplined army of men armed with long lances extended, as it is suppressed to a dense formation of warriors with long spears raised, with which also formed a strong protection against arrows shot.