Swiss pikemen were soldiers from the Swiss Confederation known for their use of the pike, a long spear-like weapon. They emerged in the late 14th century and became famous for their disciplined formations and effective tactics in battle. Their ability to work together in tight formations made them a formidable force against cavalry and infantry. The Swiss pikemen played a crucial role in several key battles during the Renaissance, contributing to the military reputation of Switzerland. Their tactics influenced European warfare, leading to the adoption of similar formations by other armies. The effectiveness of the Swiss pikemen helped establish Switzerland as a significant military power during this period.