Complex sentence: The operation to retake the building was led by General Jesús Armando Arias Cabrales, commander of the Thirteenth Army Brigade in Bogotá; he appointed Colonel Alfonso Plazas, commander of an armored cavalry battalion, to personally oversee the operation.
Split into simpler sentences: The operation to retake the building was led by General Jesús Armando Arias Cabrales, commander of the Thirteenth Army Brigade in Bogotá. He appointed Colonel Alfonso Plazas, commander of an armored cavalry battalion, to personally oversee the operation.