War of the Pyrenees
War of the Pyrenees (1793-1795) was the Pyrenees front of the First Coalition's war against the First French Republic. Also known as Great War, War of Roussillon, or War of the Convention, it pitted France against Spain and Portugal during the French Revolutionary Wars.
The Spanish government declared war against revolutionary France on 17 April 1793 in response to execution of the King and Queen of France. Spanish army under General Ricardos invaded France and occupied Roussillon in April 1793. Spanish forces also took part in occupation of Toulon in 1793. General Ricardos returned to Madrid, asking for reinforcements, but he died and the Spanish Army lost its best commander. Soon, French general Dugommier fought back, recaptured all the territories lost and crossed the Pyrenees to invade Spain. French forces routed their Spanish counterparts and occupied St Elmo, Collioure, Port-Vendres, Bellegarde, San Sebastian (General Dugommier killed during the siege), etc in 1793-1794.
The Peace of Basel ended the war in 1795 and the alliance convention between France and Spain was signed in 1796. Portugal remain in combat, as the peace was not concluded with the Portuguese.