French corsairs now a small museum. French corsairs Corsairs () were privateers, authorized to conduct raids on shipping of a nation at war with France, on behalf of the French crown. Seized vessels and cargo were sold at auction, with the corsair captain entitled to a portion of the proceeds. Although not French Navy personnel, corsairs were considered legitimate combatants in France (and allied nations), provided the commanding officer of the vessel was in possession of a valid letter of marque ( or , the latter giving "corsairs" their name), and the officers and crew conducted themselves according to contemporary admiralty law.
Quasi-War response France authorized privateers to conduct attacks on American shipping, seizing numerous merchant ships, and ultimately leading the U.S. to retaliate. The war was called "quasi" because it was undeclared. It involved two years of hostilities at sea, in which both navies and privateers attacked the other's shipping in the West Indies. Many of the battles involved famous naval officers such as Stephen Decatur, Silas Talbot and William Bainbridge. The unexpected fighting ability of the newly re-established U.S. Navy, which concentrated on attacking the French West Indian trade, together with the growing weaknesses and final overthrow of the ruling French