A prize of war is a piece of military property seized by the victorious party after a war or battle, typically at sea. This term was used nearly exclusively in terms of a captured ship during the 18th and 19th centuries. Rules defining how prizes were claimed and administered originated before there were organized government navies and were an outgrowth of privateering. Although not taken in combat, two Gorch Fock class barques were confiscated from Germany as reparation prizes at the conclusion of World War II, one of which remains in US service as the USCGC Eagle.