Sumter remained defiant. When Admiral Dahlgren demanded the fort’s surrender, on the morning of the 7th, General Beauregard sent word that the admiral could have it when he could “take it and hold it.” On September 4 the garrison had been relieved with fresh troops—320 strong. Maj. Stephen Elliott succeeded to the command. Admiral Dahlgren “immediately designed to put into operation a plan to capture Fort Sumter.” As a preliminary, the monitor _Weehawken_ was ordered to pass in around Cummings Point “to cut off all communication by that direction.” Later in the day, the _New Ironsides_ and the remaining ironclads were to move up “to feel, and if possible, pass” the obstructions believed to be in the channel north of Sumter. But the Weehawken grounded, and the monitors caught such a severe fire from Fort Moultrie and the other Confederate batteries on Sullivan’s Island, that Admiral Dahlgren “deemed it best to give [his] entire attention to the _Weehawken_” and withdraw. Whatever his original plan, Admiral Dahlgren now determined upon a small-boat assault. The task seemed simple; there was “nothing but a corporal’s guard in the fort ... all we have to do is go and take possession.” [Illustration: CONFEDERATE DEFENSES OF CHARLESTON HARBOR, 1863-1865] [Illustration: “The Flag of Sumter, October 20, 1863” painted by Conrad Wise Chapman, Confederate artist. Courtesy Confederate Museum, Richmond.] _The Small-boat Assault_ On the night of September 8-9, 400 sailors and marines made the attempt. A tug towed the small boats within 800 yards of the fort, then, too awkwardly, cast them loose. In the darkness and confusion, plans went awry. Without the benefit of a diversionary assault, two columns advanced simultaneously upon the right flank of the fort. The Confederate garrison coolly held fire till the leading boats were in the act of landing, then let loose with a galling fire of musketry, hand grenades, “fire balls,” grape and canister, brickbats, and masonry fragments. At a signal from the fort, the Confederate gunboat _Chicora_ steamed out from the harbor and opened fire; Fort Moultrie “fired like a devil.” From the outer boats, the marines replied rapidly for a few minutes. Some of the sailors ashore fired a few times from their revolvers, but for the most part sought refuge in the embrasures or breaches of the wall. It was all over in 20 minutes. Most of the boats did not even touch shore. The Federal loss was 124 killed, wounded, and captured; 5 boats were taken. A similar expedition from Gillmore’s command was detained by low tide in a creek west of Morris Island. Service rivalry had prevented active cooperation that might have meant victory.