War of Roussillon, also called War of the Pyrenees or War of the Convention, (1793-1795). Conflict between the Spain of Charles IV and the First French Republic. Eastern Pyrenees. Surrender of the Spanish garrison of the Fort de Bellegarde on 17 September 1794. Engraving. Historia del Levantamiento, guerra y revolucion de Espana by the Conde de Toreno. Madrid, 1851. (Photo by: Prisma/Universal Images Group via Getty Images)