During the Piast and Jagellon Dynasties (10th to 16th Centuries) various orders of Teutonic Knights in Poland developed many techniques for surmounting the wall of a castle they were besieging. One of these techniques involved lightly armored young knights--carrying ropes to pull up the heavier armored older knight--using a pole to leap to the top of the battlements. This technique eventually evolved into a sport, but it is unclear whether the word "pole" refers to the device used to surmount the battlements or the nationality of the persons doing the surmounting.