A pike is a pole weapon, a very long thrusting spear used extensively by infantry. Unlike many similar weapons, the pike is not intended to be thrown. Pikes were used regularly in European warfare from the early Middle Ages until around 1700, and wielded by foot soldiers deployed in close order. The pike found extensive use with Landsknecht armies and Swiss mercenaries, who employed it as their main weapon and used it in pike square formations. A similar weapon, the sarissa, was also used by Alexander the Great's Macedonian phalanx infantry to great effect.