Complex sentence: The Battle of Salamanca saw an Anglo-Portuguese army under General Arthur Wellesley defeat Marshal Auguste Marmont's French forces among the Arapiles hills south of Salamanca, Spain on July 22,1812 during the Peninsular War.
Split into simpler sentences: The Battle of Salamanca (July 22,1812) saw an Anglo-Portuguese army under General Arthur Wellesley defeat Marshal Auguste Marmont's French forces. The battle was fought among the Arapiles hills south of Salamanca, Spain during the Peninsular War.