“To-day, at 5 P. M., General Hazen’s division of the Fifteenth Corps carried Fort McAllister by assault, capturing its entire garrison and stores. This opened to us the Ossabaw Sound, and I pulled down to this gunboat to communicate with the fleet. Before opening communication, we had completely destroyed all the railroads leading into Savannah, and invested the city. The left is on the Savannah River, three miles above the city, and the right is on the Ogeechee River, at King’s Bridge. The army is in splendid order and equal to any thing. The weather has been fine and supplies abundant. Our march was most agreeable, and we were not at all molested by guerillas. We reached Savannah three days ago, but owing to Fort McAllister we could not communicate; now we have McAllister, we go ahead. “We have already captured two boats on the Savannah River, and have prevented their gunboats from coming down. I estimate the population of Savannah at twenty-five thousand and the garrison at fifteen thousand. General Hardee commands. We have not lost a wagon on the trip, but have gathered in a large supply of mules, negroes, horses, etc., and our teams are in far better condition than when we started. My first duty will be to clear the army of surplus negroes, mules, and horses. We have utterly destroyed over two hundred miles of railroad, and consumed stores and provisions that were essential to Lee’s and Hood’s armies. “The quick work made with Fort McAllister, and the opening of communication with our fleet and consequent independence for supplies, dissipate all their boasted threats to head me off and starve the army. I regard Savannah as already gained. Yours truly, “W. T. SHERMAN, Major-General.” The fall of the fortress opened, as we have seen, the Ogeechee River to Ossabaw Sound at its mouth, into which our vessels sailed; it also gave General Sherman the opportunity of establishing a “water-base” anywhere on that stream between his army and the sea, just back of Savannah. It did more; the Savannah and the Albany and Gulf Railroads communicating with the southern part of the State, were taken from the enemy, cutting off large supplies. The next move was to stretch the army across the peninsula between the rivers, the left resting on the Savannah, three miles above the city, and the extreme right on the Ogeechee at King’s Bridge. All the railways were in our possession, the rebel gunboats which had gone up the Ogeechee to prevent General Sherman from crossing into South Carolina were shut in, and the commander-in-chief prepared to seize the beautiful town. Savannah, the largest city of Georgia, was founded by General Oglethorpe in 1731−’32.