Miss McCrae by an Indian who, it is said, was sent by her betrothed to bring her into the British lines, excited widespread indignation. Burgoyne was in sore need of supplies and made an attempt to seize the insurgents' stores and horses collected at Bennington. He sent only some 500 men on this service, for he was assured that the district was friendly. It was far otherwise. The party was surrounded on August 16, and another detachment formed of German troops which was despatched to help them marched so slowly that it did not come up in time. Both bodies were defeated with a loss, perhaps, of about 500 men. News came of the failure of St. Leger's expedition. On his arrival at Oswego he was joined by Sir John Johnson and Butler with their loyalist regiments, and by a force of Indians whom Johnson, one of their superintendents, and the Mohawk leader, Brant, persuaded to march with them. He besieged Fort Stanwix, and, on August 6, defeated a force sent to relieve it. But his guns were too light for siege operations; the garrison held out, and his Indians forced him to raise the siege. During his retreat they mutinied; he was barely able to bring off his regular troops, and lost his guns and stores. Burgoyne was in a dangerous position; the country swarmed with enemies; "wherever the king's troops point," he wrote, "militia to the number of three or four thousand assemble in a few hours". He might have retreated to Fort Edward, where he would have had communication with Lake George; but he held that he was bound by his orders to advance, and on September 15, after collecting provisions for about a month, he conveyed his force to the western bank of the Hudson and cut himself off from communication with the lakes. Besides artillery, he had then with him only 5,000 men under arms.[126] On the 19th his force was partially engaged by Arnold at Freeman's Farm. The British held their ground but lost over 500 men, and Gates, the American commander, with 11,000 men, who did not take part in the fight, occupied a strong position in front of them. A message came from Clinton that he was about to attack the forts on the Hudson below Albany, and Burgoyne sent answer that he hoped to be able to hold his ground until October 20. He fortified his position and waited for further news. None came to him. The insurgent forces grew to at least 16,000 men; Burgoyne's provisions were becoming exhausted and on October 3 he put his little army on half rations. Despite the overwhelming number of the enemy, he moved forward on the 7th to ascertain whether he could force a passage through their lines. He was defeated with heavy loss and fell back on Saratoga. [Sidenote: _SURRENDER OF BURGOYNE'S ARMY._]