While the British right wing was thus closely pressed in front and on its flank, a distinct division of the American troops was ordered to intercept its retreat to camp, and to separate it from the residue of the army. Burgoyne perceived the danger of his situation and ordered the light infantry under General Fraser with part of the Twenty-fourth regiment to form a second line in order to cover the light infantry of the right and secure a retreat. While this movement was in progress the left of the British right was forced from its ground and the light infantry was ordered to its aid. In the attempt to execute this order they were attacked by the rifle corps with great effect, and Fraser was mortally wounded. Overpowered by numbers and pressed on all sides by a superior weight of fire, Burgoyne with great difficulty and with the loss of his field pieces and great part of his artillery corps regained his camp. The Americans followed close in his rear, and assaulted his works throughout their whole extent. Toward the close of day the entrenchments were forced on their right, and General Arnold with a few men actually entered their works, but his horse being killed under him and himself wounded, the troops were forced out of them, and it being nearly dark they desisted from the assault. The left of Arnold's division was still more successful. Jackson's regiment of Massachusetts, then led by Lieutenant-Colonel Brooks, turned the right of the encampment and stormed the works occupied by the German reserve. Lieutenant-Colonel Breyman who commanded in them was killed and the works were carried. The orders given by Burgoyne to recover them were not executed, and Brooks maintained the ground he had gained. Darkness put an end to the action and the Americans lay all night with their arms in their hands about half a mile from the British lines ready to renew the assault with the return of day. The advantage they had gained was decisive. They had taken several pieces of artillery, killed a great number of men, made upwards of 200 prisoners, among whom were several officers of distinction, and had penetrated the lines in a part which exposed the whole to considerable danger.