Complex sentence: At 1:00 a.m. on February 14, Floyd held a council of war in his headquarters, the Dover Hotel, and there was general agreement that Fort Donelson was probably untenable.
Split into simpler sentences: At 1:00 a.m. on February 14, Floyd held a council of war in his headquarters at the Dover Hotel. There was general agreement that Fort Donelson was probably untenable.