Complex sentence: The Chilean Navy had serious problems with its Peruvian counterpart at the beginning, as the Peruvian monitor "Huáscar", commanded by Captain Miguel Grau Seminario inflicted the Chileans several defeats at Iquique and other battles.
Split into simpler sentences: The Chilean Navy had serious problems with its Peruvian counterpart at the beginning. The Peruvian monitor "Huáscar", commanded by Captain Miguel Grau Seminario inflicted the Chileans several defeats at Iquique and other battles.