The First Barbary War was waged between the United States of America and Sweden against the nations of the Barbary coast (primarily Tripoli) and their Mediterranean pirates from 1801 to 1805, though Sweden was already at it as of 1800. America entered the conflict after a number of her sailors were held at ransom by barbary pirates. A decisive victory at Derna would prove the war to be in America's favor, and would cement the Marines as a renowned fighting force. In addition, it inspired the line 'To the shores of Tripoli' in The Marine's Hymn.