Complex sentence: The armored turrets were not damaged and remained in service throughout the bombardment.Counter-battery fire from Fort Drum's 14-inch guns and Fort Frank's 12-inch mortars was ineffective.
Split into simpler sentences: The armored turrets were not damaged and remained in service throughout the bombardment. Counter-battery fire from Fort Drum's 14-inch guns and Fort Frank's 12-inch mortars was ineffective.