A pike square is a military formation used primarily in the early modern period, characterized by a dense arrangement of soldiers armed with pikes and other weapons. This formation allowed troops to defend against cavalry charges while maintaining a strong offensive capability. The pike square was effective in creating a formidable wall of spears, making it difficult for enemy forces to penetrate. The pike square was commonly employed by armies in Europe, particularly during the Renaissance and Thirty Years' War. It required disciplined soldiers who could work together to maintain the formation's integrity. Over time, advancements in military tactics and weaponry led to the decline of the pike square in favor of more flexible formations.