Complex sentence: The 7th Division has three battalions: "Artesanos de Tacna", "Granaderos de Tacna" y "Cazadores de Piérola"; the 8th had two units: the "Tarapacá" and "Iquique" battalions.
Split into simpler sentences: The 7th Division has three battalions: "Artesanos de Tacna", "Granaderos de Tacna" y "Cazadores de Piérola"; a. The 8th had two units: the "Tarapacá" and "Iquique" battalions.