Pike and shot was a historical infantry tactical formation that first appeared during the Italian Wars of the late 15th and early 16th centuries, and was used until the development of the bayonet in the late 17th century. This type of formation combined soldiers armed with pikes and soldiers armed with arquebuses and/or muskets. Other weapons such as swords, halberds, and crossbows were also sometimes implemented. The formation was initially developed by the armies of the Holy Roman Empire (Landsknechte) and of the Spanish Crown (Tercios), and later by the Dutch and Swedish armies in the 17th century.