Gates immediately detached 100 regular infantry and 300 militia of North Carolina to reinforce Sumter, whom he ordered to reduce the fort and intercept the convoy. Meanwhile he advanced nearer Camden, with the intention of taking a position about seven miles from that place. For that purpose he put his army in motion at 10 in the evening of the 15th of August, having sent his sick, heavy baggage, and military stores not immediately wanted, under a guard to Waxhaws. On the march Colonel Armand's {5} legion composed the van; Porterfield's light infantry, reinforced by a company of picked men from Stevens' brigade, marching in Indian files, two hundred yards from the road, covered the right flank of the legion, while Major Armstrong's light infantry of North Carolina militia, reinforced in like manner by General Caswell, in the same order, covered the left. The Maryland division, followed by the North Carolina and Virginia militia, with the artillery, composed the main body and rear guard; and the volunteer cavalry were equally distributed on the flanks of the baggage. The American army did not exceed 4,000 men, only about 900 of whom were regular troops, and 70 cavalry.

On the advance of Gates into South Carolina, Lord Rawdon had called in his outposts, and concentrated his force at Camden. Informed of the appearance of the American army, and of the general defection of the country between the Pedee and the Black river, Cornwallis quitted Charleston and repaired to Camden, where he arrived on the same day that Gates reached Clermont.

The British force was reduced by sickness, and Cornwallis could not assemble more than two thousand men at Camden. That place, though advantageous in other respects, was not well adapted for resisting an attack; and as the whole country was rising against him, Cornwallis felt the necessity of either retreating to Charleston, or of instantly striking a decisive blow. If he remained at Camden, his difficulties would daily increase, his communication with Charleston be endangered, and the American army acquire additional strength. A retreat to Charleston would be the signal for the whole of South Carolina and Georgia to rise in arms; his sick and magazines must be left behind; and the whole of the two provinces, except the towns of Charleston and Savannah, abandoned. The consequences of such a movement would be nearly as fatal as a defeat. Cornwallis, therefore, although he believed the American army considerably stronger than what it really was, determined to hazard a battle; and, at 10 at night, on the 15th of August, the very hour when Gates proceeded from Rugely's Mills, about thirteen miles distant, he marched towards the American camp.

About 2 in the morning of the 16th of August (1780) the advanced guards of the hostile armies unexpectedly met in the woods, and the firing instantly began. Some of the cavalry of the American advanced guard being wounded by the first discharge, the party fell back in confusion, broke the Maryland regiment which was at the head of the column, and threw the whole line of the army into consternation. From that first impression, deepened by the gloom of night, the raw and ill-disciplined militia seem not to have recovered. In the reencounter several prisoners were taken on each side, and from them the opposing generals acquired a more exact knowledge of circumstances than they had hitherto possessed. Several skirmishes happened during the night, which merely formed a prelude to the approaching battle, and gave the commanders some notion of the position of the hostile armies.

Cornwallis, perceiving that the Americans were on ground of no great extent, with morasses on their right and left, so that they could not avail themselves of their superior numbers to outflank his little army, impatiently waited for the returning light, which would give every advantage to his disciplined troops. {6}

Both armies prepared for the conflict. Cornwallis formed his men in two divisions; that on the right was under the command of Lieutenant-Colonel Webster, that on the left under Lord Rawdon. In front were four field pieces. The Seventy-first regiment, with two cannon, formed the reserve; and the cavalry, about 300 in number, were in the rear, ready to act as circumstances might require.

In the American army the second Maryland brigade, under General Gist, formed the right of the line; the militia of North Carolina, commanded by General Caswell, occupied the center; and the militia of Virginia, with the light infantry and Colonel Armand's corps, composed the left; the artillery was placed between the divisions. The First Maryland brigade was stationed as a reserve 200 or 300 yards in the rear. Baron de Kalb commanded on the right; the militia generals were at the head of their respective troops, and General Gates resolved to appear wherever his presence might be most useful.

At dawn of day Cornwallis ordered Lieutenant-Colonel Webster, with the British right wing, to attack the American left. As Webster advanced he was assailed by a desultory discharge of musketry from some volunteer militia who had advanced in front of their countrymen, but the British soldiers, rushing through that loose fire, charged the American line with a shout. The militia instantly threw down their arms and fled, many of them without even discharging their muskets, and all the efforts of the officers were unable to rally them. A great part of the center division, composed of the militia of North Carolina, imitated the example of their comrades of Virginia; few of either of the divisions fired a shot, and still fewer carried their arms off the field. Tarleton with his legion pursued and eagerly cut down the unresisting fugitives. Gates, with some of the militia general officers, made several attempts to rally them, but in vain. The further they fled the more they dispersed, and Gates in despair hastened with a few friends to Charlotte, eighty miles from the field of battle.

De Kalb at the head of the Continentals, being abandoned by the militia, which had constituted the center and left wing of the army, and being forsaken by the general also, was exposed to the attack of the whole British army. De Kalb and his troops, however, instead of imitating the disgraceful example of their brethren in arms, behaved with a steady intrepidity and defended themselves like men. Rawdon attacked them about the time when Webster broke the left wing, but the charge was firmly received and steadily resisted, and the conflict was maintained for some time with equal obstinacy on both sides. The American reserve covered the left of De Kalb's division, but its own left flank was entirely exposed by the flight of the militia, and, therefore, Webster, after detaching some cavalry and light troops in pursuit of the fugitive militia, with the remainder of his division attacked them at once in front and flank. A severe contest ensued. The Americans, in a great measure intermingled with British, maintained a desperate conflict. Cornwallis brought his whole force to bear upon them; they were at length broken and began to retreat in confusion. The brave De Kalb, while making a vigorous charge at the head of a body of his men, fell pierced with eleven wounds. His aide-de-camp, Lieutenant-Colonel de Buysson, embraced the fallen general, announced his rank and nation to the surrounding enemy, and while thus generously exposing his own life to save his bleeding friend, he received several severe wounds, and was taken prisoner with him. De Kalb met with all possible attention and assistance from the victorious enemy, but that gallant officer expired in a few hours. Congress afterward ordered a monument to be erected to his memory.

Never was victory more complete or defeat more total. Every regiment was broken and dispersed through the woods, marshes, and brushwood, which at once saved them from their pursuers and separated them more entirely from each other. The officers lost sight of their men and every individual endeavored to save himself in the best way he was able. The British cavalry pursued; and for many miles the roads were strewed with the wrecks of a ruined army. Wagons or fragments of wagons, arms, dead or maimed horses, dead or wounded soldiers, were everywhere seen. General Rutherford, of the North Carolina militia, was made prisoner, but the other general officers reached Charlotte at different times and by different routes.