Complex sentence: A disastrous attack ensues on German positions across the Serchio River, in which an officer, Captain Nokes (Walton Goggins), calls down artillery on the 92nd's own position because he refuses to believe their reports of how far they have advanced.
Split into simpler sentences: A disastrous attack ensues on German positions across the Serchio River. An officer, Captain Nokes (Walton Goggins), calls down artillery on the 92nd's own position, refusing to believe their reports of how far they have advanced.