The attack was fixed for the following morning. Bodies of the American militia were to feign attacks upon the center and left, while a strong force of the combined armies was to make a real attack in two columns upon the right. The troops composing the two columns consisted of 3500 French soldiers and 950 Americans. The principal force, commanded by Count D'Estaing in person, assisted by General Lincoln, was to attack the Springfield redoubt, which was situated at the extreme right of the British central line of defense and close to the edge of the swamp. The other column, under the command of Count Dillon, was to move silently along the margin of the swamp, pass the three redoubts, and get into the rear of the British lines.
The troops were in motion long before daylight. The attempt to burn the abattis had excited the suspicion of the English that an assault might be intended, and accordingly pickets were thrown out in front of the intrenchments and the scouts were ordered to keep a sharp watch among the trees which grew in and near the swamp.
Harold with his friends had accompanied Colonel Maitland's column in its march to Savannah and had labored vigorously at the defenses, being especially occupied in felling trees and chopping wood for the abattis. Before daybreak they heard the noise made by the advance of the enemy's columns through the wood and hurried back to the Springfield redoubt, where the garrison at once stood to arms. In this redoubt were a corps of provincial dismounted dragoons, supported by the South Carolina regiment.
Just as daylight appeared the column led by Count D'Estaing advanced toward the Springfield redoubt, but the darkness was still so intense that it was not discovered until within a very short distance of the works. Then a blaze of musketry opened upon it, while a destructive cross-fire was poured in from the adjoining batteries. So heavy was the fire that the head of the column was almost swept away. The assailants kept on with great bravery until they reached the redoubt; here a desperate hand-to-hand contest took place. Captain Tawse fell with many of his men, and for a moment a French and an American standard were planted upon the parapet; nevertheless the defenders continued to cling to the place and every foot was desperately contested.
At this moment Colonel Maitland, with the grenadiers of the Sixtieth Regiment and the marines, advanced and fell upon the enemy's column, already shaken by the obstinate resistance it had encountered and by its losses by the fire from the batteries. The movement was decisive. The assailants were driven headlong from the redoubt and retreated, leaving behind them 637 of the French troops killed and wounded and 264 of the Americans.
In the mean time the column commanded by Count Dillon mistook its way in the darkness and was entangled in the swamp, from which it was unable to extricate itself until it was broad daylight and it was fully exposed to the view of the garrison and to the fire from the British batteries. This was so hot and so well directed that the column was never able even to form, far less to penetrate into the rear of the British lines.
When the main attack was repulsed Count Dillon drew off his column, also. No pursuit was ordered as, although the besiegers had suffered greatly, they were still three times more numerous than the garrison.
A few days afterward the French withdrew their artillery and re-embarked on board ship.
The siege of Savannah cost the allies 1500 men, while the loss of the garrison was only 120. The pleasure of the garrison at their successful defense was marred by the death of Colonel Maitland, who died from the effects of the unhealthy climate and of the exertions he had made.
A few days after the raising of the siege the French fleet was dispersed by a tempest, and Count D'Estaing, with the majority of the ships under his command, returned to France.