Military history of Spain Portugal and engage French forces on the frontiers while Spanish "guerrilleros" wore down the occupiers. Acting in concert, regular and irregular allied forces prevented Napoleon's marshals from subduing the rebellious Spanish provinces. The Spanish navy, put to sea in support of France during the War of the Third Coalition in 1805, suffered terrible losses at the Battle of Trafalgar, having been weakened by yellow fever in the preceding years; in many ways this marked the nadir of Spanish naval history. The events in mainland Spain had extensive consequences for her empire. Spain's colonies in the Americas had shown an increasing
French Forces of the Interior the help given to the operations by the FFI was equivalent to four full divisions. FFI units seized bridges, began the liberation of villages and towns as Allied units neared, and collected intelligence on German units in the areas entered by the Allied forces, easing the Allied advance through France in August 1944. According to a volume of the U.S. official history of the war, In Brittany, southern France, and the area of the Loire and Paris, French Resistance forces greatly aided the pursuit to the Seine in August. Specifically, they supported the Third Army in Brittany and the Seventh