It’s almost as though they had to have the Crusades because of them.
Oh wait...maybe that was a clue.
And the US Navy fought against them in 1815: The bravery of the U.S. Marine Corps in these wars led to the line “to the shores of Tripoli” in the Marine Hymn, and they would forever be known as “leathernecks” for the leather collars of their uniforms, designed to prevent their heads from being cut off by the Muslim scimitars when boarding enemy ships.