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The Siege of Fort Watson

April 15-23 , 1781 in Clarendon County, South Carolina

American Forces Commanded by
Gen Francis Marion
Strength Killed Wounded Missing / Captured
80 2 6 ?
British Forces Commanded by
Lieut. James McKay
Strength Killed Wounded Missing / Captured
120 ? ? ?
Conclusion: American Victory

When Maj. Gen. Nathanael Greene turned from his pursuit of Gen. Charles Cornwallis to march toward Camden, he detached Lt. Col. Henry Lee to screen against a possible movement of Cornwallis in that direction from Wilmington. If this threat did not materialize, Lee was to join Brig. Gen. Francis Marion's force and capture the British garrison at Fort Watson. The fort was named after the Tory leader Col. John Watson.

Fort Watson was a part of the British line of communications from Charleston, located 60 miles to the southeast. It was located on an Indian mound on the edge of Scott's Lake. The fort was a small but strong stockade that was surrounded by 3 rings of abatis, and sat atop an Indian mound. This tumulus was on the edge of the Santee River, and provided a piece of commanding terrain in the bare, level plain. It was between 30-50 feet high. Ft. Watson itself was defended by Lieut. James McKay, of the King’s American Regt., with 5 officers, 73 Provincials and 36 loyalists, with one cannon. One source speaks of some of the South Carolina Rangers and some of Lieut. Col. Watson’s Provincial Light infantry as being present.

On April 14, with Lee's Legion, a company of Maryland Continentals, and 1 gun, Lee proceeded to join up with Marion's force at Black River. He only now had 80 men as the rest had returned home.

On April 15, Marion and Lee, the latter formally under the command of Marion, laid siege to Fort Watson. Earlier in the same day (or else the day before), Lee sent Capt. John Rudulph, with the Legion cavalry, down the Santee to watch Watson’s movements. This left Lee’s own corps with his Legion infantry and the Maryland company of 100 under Capt. Edward Oldham. Marion, during the Siege, was reinforced by a few men from Col. Abel Kolb, and by is end had 300. Marion cut off the forts water supply, but McKay was able to dig a well in the fort on the 18th. Smallpox broke out among some of Marion's men, and a number deserted.

After the call for surrender was refused, the Americans captured the water supply point on the lake, but the garrison dug a well. Unfortunately, the Americans did not have any siege artillery. Col. Hezekiah Maham proposed building a type of tower. The tower was a prefabricated log crib, rectangular in plain, on which a protected platform was built for infantry to deliver plunging musketfire into the fort. From this point on, the seige tower was to be called the "Maham Tower."

On April 20, after 5 days of construction, the tower was completed.

On April 22, during the dark night, the Americans carried the tower to within range of the fort.

On April 23, during the dawn hours, a company of Americans began to fire well-aimed shots down into the stockade. At the same time, 2 assault parties attacked the abatis. Being unable to defend the stockade without exposing themselves to fire from the tower, McKay had no choice but to surrender the fort to the Americans. The prisoners were sent across Black River towards Greene's depot at Rugeley's. The same day (the 23rd) Marion and Lee removed to Richardson's plantation in the High Hills of the Santee. By the 25th, Lee's cavalry under Capt. John Rudulph which had been keeping an eye on Watson had, re-joined Marion and Lee at Richardson's plantation. While at Richardson’s, Marion, who had been reinforced by men sent by Col. Abel Kolb during the siege, sent Col. Hugh Ervin and 80 men to Rafting Creek to prevent the loyalists from driving cattle.

On April 24, Capt. Ebenezer Finley, with a six-pounder, and Maj. Pinkertham Eaton, with 140 N.C. Continentals, had been sent by Greene on the 24th to join Lee and Marion at Ft. Watson, but did not join up with Lee in time to participate.

The editor to the Greene Papers notes: “According to a journal that one of the posts British officer’s kept during the siege, it was ‘"the cowardly and mutinous behavior of a majority of men, having grounded their arms and refused to defend the post any longer’” that forced the surrender.

The officers and Provincials soldiers were paroled, while the “irregulars” (loyalist militia) were taken prisoner. A large quantity of stores and ammunition were captured also. The ammunition was particularly welcome to Marion who was frequently short of it. Marion reported losing 2 killed, and Lee lost 2 wounded. Lossing says the Americans lost 2 killed, three Continentals and 3 militia wounded, while McCrady gives the total casualties as 2 killed and 6 wounded. After the surrender, the fort was dismantled.

Marion on the day of Watson’s surrender (the 23rd), wrote Greene: “Lieutenant-colonel Lee joined me on the Santee the 14th instant, after a rapid march from Ramsey's mills on Deep river, which he finished in eight days. The 15th we marched to this place, and invested it: Our chief hope was to cut off the water: Some riflemen and continentals were, for this purpose, posted between the fort and the lake. The fort lies on a rising ground, about forty feet high, surrounded by three rows of abbatis. There were no trees near enough to cover us from the enemy's fire. The third day after we had begun the siege, we perceived that the enemy had dug a well near the abbatis without meeting with any opposition from us, which was for want of several very necessary implements, without which we could not make trenches in order to make our approach to the fort; we therefore resolved immediately to erect a work as high as the fort, and it was finished this morning by Major Maham; we then made a lodgement on the side of the eminence near the abbatis; this was accomplished with great spirit and address by Ensign Robinson and Mr. R. Lee, a volunteer in Colonel Lee's regiment, who, surmounting every difficulty, got up to the abbatis, and pulled it away: By this the commander of the fort found himself obliged to hoist a white flag. I enclose the capitulation, which I hope will meet with your approbation. Our loss was only two militiamen killed, and three continentals wounded. I shall demolish the fort without loss of time, and then proceed to the heights of Santee, and shall halt at Captain Richardson's plantation to wait for farther orders.”

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