A musketeer was an early modern type of soldier equipped with a musket. Musketeers were an important part of early modern armies, particularly in Europe. In most cases they served on foot as infantry, though sometimes they could operate on horseback: as a cavalryman or dragoon. The musketeer was a precursor to the rifleman. Muskets were replaced by rifles in most western armies during the mid-1850s. The traditional designation of "musketeer" for an infantry private survived in the Imperial German Army until World War I.