The Battle of Tamames was lost by part of Marshal Michel Ney's French army under General of Division Jean Marchand in the Peninsular War.
Despite being on defensive ground, the battle opened badly for the Spaniards under General del Parque, who resorted to severe measures to restore discipline.
The Spanish cavalry was routed early on, but fire from del Parque's own infantry quickly brought their retreat to grief and directed them back into the fight.
Spanish artillery positions similarly fell to the French but were retaken at bayonet point by del Parque's infantry.
Wellington had found the Spanish completely uncooperative during the campaign which culminated in the Battle of Talavera and his subsequent retreat to Portugal.