The statistics of this conflict show that the total number of Federal troops that crossed the Virginia channel was about 1,853 officers and men. Of these 653 belonged to the Massachusetts Fifteenth, 340 to the Massachusetts Twentieth, about 360 to the Tammany regiment, and 570 to the first battalion of the First California. The Massachusetts Fifteenth lost in killed, wounded, and missing 322, including a lieutenant-colonel (wounded), and 14 out of 28 line officers who crossed. The Massachusetts Twentieth lost in all 159, including a colonel, major, surgeon, and adjutant (prisoners), and 8 out of 17 line officers who crossed. The Tammany companies lost 163, including a colonel, and 7 out of 12 line officers who crossed. The Californians lost 300, including their colonel (the general commanding), lieutenant-colonel (wounded), adjutant, and 15 line officers out of 17 who crossed. Total engaged in the fight, 1,853; total losses, 953; field officers crossing, 11; returning uninjured, 3; line officers crossing, 74; returning uninjured, 30. The troops that were successful in reaching Harrison’s Island remained there during the night of the 21st, and on the morning of the 22d were all passed over in safety to the Maryland shore, no attempt being made by the rebels to interfere with the movement. The condition of many of the men was pitiful. Some of them in their encounters with the enemy, and in struggling through the trees and thorny undergrowth, or plunging down the rocky steep, having been almost stripped of clothing. In a short time they were encamped in comfortable quarters, and the wounded were provided for with the greatest care. Large bodies of rebel troops had been brought up to Leesburg after the battle, to defend that point, and to make an offensive movement, if deemed expedient. About four thousand Federals, under the command of General Stone, occupied the Virginia shore immediately opposite Edwards Ferry, and were in imminent danger of attack from the now rapidly increasing force of rebels threatening their front. Generals McClellan and Banks, who had repaired to Edwards Ferry, on the Maryland shore, and were ready to furnish large reinforcements in the event of a general engagement, watched with anxiety the rebel movements on the opposite side of the river. Becoming convinced that the means of transportation were entirely inadequate to properly reinforce General Stone’s command, the commander-in-chief ordered a withdrawal of all the Federal forces to the Maryland shore, which was safely accomplished on the night of the 23d.