Privateer 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 (fr. "Lettre de Marque" or "Lettre de Course"), and the officers and crew conducted themselves according to contemporary admiralty law. By acting on behalf of the French Crown, if captured by the enemy, they could
American Revolutionary War Dutch ports. The Republic maintained free trade with France following France's declaration of war on Britain, citing a prior concession by Britain on this issue. Britain responded by confiscating Dutch shipping, and even firing upon it. Consequently, the Republic joined the First League of Armed Neutrality to enforce their neutral status. The Republic had also given sanctuary to American privateers and had drafted a treaty of commerce with the Americans. Britain argued that these actions contravened the Republic's neutral stance and declared war in December 1780. Soon after France declared war, French and British fleets fought an indecisive action off