That great event--the battle of the Cowpens--revived the spirits of the patriots throughout the country. Every where, as the news spread, men who had before been discouraged flew to arms. The action took place on the seventeenth of January, 1781; on the twenty-second of the same month, six wagons were loaded with corn at Wade's island, sixty miles down the Catawba for the use of General Davison's division. The whole whig country of Chester, York and Lancaster may be said to have risen in mass, and was rallying to arms. Mecklenburg, North Carolina, was again the scene of warlike preparation; for the whigs hoped to give the enemy another defeat at Cowans or Batisford on the Catawba. On the twenty-fourth of January, General Sumter crossed this river at Landsford, and received a supply of corn from Wade's island. His object was to cross the districts to the west, in the rear of the advancing British army, to arouse the country and gather forces as he went, threaten the English posts at Ninety-Six and Granby, and go on to recover the State. While Cornwallis marched from his encampment on Service's plantation, the whigs of Chester, under the gallant Captains John Mills and James Johnston, were hovering near, watching the movements of the hostile army as keenly as the eagle watches his intended prey. Choosing a fit opportunity, as they followed in the rear, they pounced upon a couple of British officers, one of whom was Major McCarter, at a moment when they had not the least suspicion of danger, took them prisoners in sight of the enemy, and made good their retreat. By means of this bold exploit the liberation of McCalla was brought about, at a time when his wife was wholly disheartened by her repeated and grievous disappointments. When General Sumter passed through the country, a cartel of exchange was effected, giving the two British officers in exchange for the prisoners of Chester district in Camden and Charleston. The person sent with the flag to accomplish this exchange in Camden, was Samuel Neely of Fishing creek. As he passed through the town to the quarters of Lord Rawdon, he was seen and recognized by the prisoners, and it may be supposed their hearts beat with joy at the prospect of speedy release. But in consequence of some mismanagement of the business, the unfortunate men were detained in jail several weeks longer. Neely was in haste to proceed to Charleston, being anxious, in the accomplishment of his mission in that city, to get his son Thomas out of the prison-ship, and in his hurry probably neglected some necessary formalities. His countrymen in Camden were kept in confinement after his return from Charleston with his son. Captain Mills was informed of this, and indignant at the supposed disrespect shown by Lord Rawdon to the cartel of General Sumter, wrote a letter of remonstrance to Rawdon, which he entrusted to Mrs. McCalla to be conveyed to him.