Complex sentence: After the capture of Valdivia Lord Thomas Cochrane left Jorge Beauchef as commarnder of troops in Valdivia, he headed south to Osorno and Maullín to expel the royalist from the Chilean mainland.
Split into simpler sentences: After the capture of Valdivia Lord Thomas Cochrane left Jorge Beauchef as commander of troops in Valdivia. Beauchef headed south to Osorno and Maullín to expel the royalist from the Chilean mainland.