If the intention was to discourage the garrison it failed entirely in its effect. Fired with indignation at so shameful a sight, they determined to encounter every danger and endure every hardship rather than fall into the hands of an enemy capable of disgracing their success by so wanton an insult to their prisoners.
The Americans, strengthened by the junction of the troops who had reduced Augusta, began to make approaches against the stockaded fort on the left of the village, which kept open the communication of the garrison with their water supply. The operations on this side were intrusted to Colonel Lee, while General Greene continued to direct those against the Star.
On the night of June 9 a sortie was made by two strong parties of the defenders. That to the right entered the enemy's trenches and penetrated to a battery of four guns, which nothing but the want of spikes and hammers prevented them from destroying. Here they discovered the mouth of a mine intended to be carried under one of the defenses of the Star.
The division on the left fell in with the covering party of the Americans, killed a number of them, and made their commanding officer a prisoner.
On the 12th Colonel Lee determined to attempt a storm of the stockade on the left, and sent forward a sergeant and six men, with lighted combustibles, to set fire to the abattis. The whole of them were killed before effecting their purpose. A number of additional cannon now arrived from Augusta, and so heavy and incessant a fire was opened upon the stockade from three batteries that on the 17th it was no longer tenable, and the garrison evacuated it in the night.
The suffering of the garrison for want of water now became extreme. With great labor a well had been dug in the fort, but no water was found, and none could be procured except from the rivulet within pistol-shot of the enemy. In the day nothing could be done, but at night negroes, whose bodies in the darkness were not easily distinguished from the tree-stumps which surrounded them, went out and at great risk brought in a scanty supply. The position of the garrison became desperate. Colonel Cruger, however, was not discouraged, and did his best to sustain the spirits of his troops by assurances that Lord Rawdon was certain to attempt to relieve the place as soon as he possibly could do so.
At length one day, to the delight of the garrison, an American royalist rode right through the pickets under the fire of the enemy and delivered a verbal message from Lord Rawdon to the effect that he had passed Orangeburg and was on his march to raise the siege.
Lord Rawdon had been forced to remain at Charleston until the arrival of three fresh regiments from Ireland enabled him to leave that place in safety and march to the relief of Ninety-six. His force amounted to 1800 infantry and 150 cavalry. General Greene had also received news of Lord Rawdon's movements, and, finding from his progress that it would be impossible to reduce the fort by regular approaches before his arrival, he determined to hazard an assault.
The American works had been pushed up close to the forts, and the third parallel had been completed, and a mine and two trenches extended within a few feet of the ditch. On the morning of June 18 a heavy cannonade was begun from all the American batteries. The Whole of the batteries and trenches were lined with riflemen, whose fire prevented the British from showing their heads, above the parapets. At noon two parties of the enemy advanced under cover of their trenches and made a lodgment in the ditch. These were followed by other parties with hooks to drag down the sand-bags and tools to overthrow the parapet. They were exposed to the fire of the block-houses in the village, and Major Green, the English officer who commanded the Star fort, had his detachment in readiness behind the parapet to receive the enemy when they attempted to storm.
As the main body of Americans did not advance beyond the third parallel and contented themselves with supporting the parties in the ditch with their fire, the commander of the fort resolved to inflict a heavy blow. Two parties, each 30 strong, under the command of Captains Campbell and French, issued from the sally-port in the rear, entered the ditch, and, taking opposite directions, charged the Americans who had made the lodgment with such impetuosity that they drove everything before them until they met. The bayonet alone was used and the carnage was great—two-thirds of those who entered the trenches were either killed or wounded.