On the 30th of January Lieutenant-Commander S.L. Phelps, having been sent by Captain Pennock in the Lexington to make a special examination of the condition of affairs on the Cumberland River, reported that, a transport having been fired upon twenty miles above Clarksville, he had landed and burned a storehouse used as a resort by the enemy. As he returned the vessel was attacked with some Parrott rifles and struck three times; but the heavy guns of the Lexington drove the enemy off. Going down to Clarksville he met there a fleet of thirty-one steamers, having many barges in tow, convoyed by three light-draught gunboats. These he joined, and the enemy having tested the power of the Lexington, did not fire a shot between Clarksville and Nashville. As a result of his enquiries he thought that no transport should be allowed to go without convoy higher than Fort Henry or Donelson, situated on either river on the line separating Kentucky and Tennessee. The Lexington was therefore detained, and for a time added to the flotilla on those rivers.
Four days later, Lieutenant-Commander Le Roy Fitch, in active charge of the two rivers, was going up the Cumberland with a fleet of transports, convoyed by the Lexington and five light-draughts. When twenty-four miles below Dover, the town on the west bank near which Fort Donelson was situated, he met a steamer bearing a message from Colonel Harding, commanding the post, to the effect that his pickets had been driven in and that he was attacked in force. Fitch at once left the convoy and pushed ahead as fast as he could. A short distance below the town he met a second steamer with the news that Harding was surrounded. At 8 P.M. he arrived, and found the Union forces not only surrounded by overwhelming forces but out of ammunition.
The enemy, not thinking about gunboats, had posted the main body of his troops in a graveyard at the west end of the town, the left wing resting in a ravine that led down to the river, thus enabling the vessels to rake that portion of his line. The gunboats opened fire simultaneously up the ravine, into the graveyard and upon the valley beyond. Taken wholly by surprise, the Confederates did not return a shot, but decamped in haste. Leaving two boats to maintain the fire through the ravine, Fitch hastened up with the other four to shell the main road, which, after leaving the upper end of the town, follows nearly the bank of the stream for some distance. The attacking force in this case was 4,500 strong, composed of regular Confederate troops under Generals Wheeler, Forrest, and Wharton. By 11 P.M. they had disappeared, leaving 140 dead. The garrison, which numbered only 800, had defended itself gallantly against this overwhelming force since noon, but was _in extremis_ when the gunboats arrived.