The Spanish conquest of El Salvador was the campaign undertaken by the Spanish conquistadores against the Late Postclassic Mesoamerican polities in the territory that is now incorporated into the modern Central American country of El Salvador. El Salvador is the smallest country in Central America, and is dominated by two mountain ranges running east–west. Its climate is tropical, and the year is divided into wet and dry seasons. Before the conquest the country formed a part of the Mesoamerican cultural region, and was inhabited by a number of indigenous peoples, including the Pipil, the Lenca, the Xinca, and Maya. Native weaponry consisted of spears, bows and arrows, and wooden swords with inset stone blades; they wore padded cotton armour.
The Spanish conquistadores were largely volunteers, receiving the spoils of victory instead of a salary; many were experienced soldiers who had already campaigned in Europe. The Spanish expeditions to Central America were launched from three different Spanish jurisdictions, resulting in rival conquests by mutually hostile Spanish captains. Spanish weaponry included swords, firearms, crossbows and light artillery. Metal armour was impractical in the hot, humid climate of Central America and the Spanish were quick to adopt the quilted cotton armour of the natives. The conquistadors were supported by a large number of Indian auxiliaries drawn from previously encountered Mesoamerican groups.