Union General William T. Sherman had planned to link up with the Union navy as part of his campaign on Georgia's coastline. When he found out that this was no longer possible, he sent cavalry units to Confederate Fort McAllister, which was quickly captured. This move provided Sherman with a vital link to obtain supplies and the siege artillery he would need to capture Savannah.
William T. Sherman was the Union general that captured Savannah Georgia in December of 1864. As Confederate forces had evacuated the city to avoid capture, the mayor of Savannah surrendered to Sherman.
General Sherman's march was directed toward the coastal port city of Savannah, Georgia, in November-December of 1864. Sherman called the capture of the port a "Christmas gift" for President Abraham Lincoln.
He conquered Atlanta and then marched through Georgia to Savannah
Savannah, Georgia
Savannah.
When it became clear to Confederate General William J. Hardee that the target of Sherman's armies was Savannah, Georgia and not Macon Georgia, he ordered Confederate cavalry unites to harass the Union's rear and both flanks. Also, he ordered all available militias to march eastward in an attempt to protect Savannah.
After a long march, Sherman's troops reached the outskirts of Savannah Georgia on December 10, 1864. Since Confederate General William Hardee had correctly identified Savannah as Sherman's target, he had time to entrench 10,000 troops in good positions. Hardee had also flooded the nearby rice fields so that the only way to approach Savannah was by narrow causeways.
It was William T. Sherman.
William T. Sherman
William Tecumseh Sherman was a Union General who during the civil war occupied Atlanta, Georgia then burned the city and a swath of territory from Atlanta to Savannah on his famous "March to the Sea".
General William Tescumseh Sherman
Union General William T. Sherman