The Union batteries had meanwhile kept up their terrible fire, while those of the enemy were silenced one after another and drawn off with the recoiling troops, with the exception of one battery, which maintained its fire with invincible obstinacy. It was felt that this battery must be taken or silenced. A stream of men in dingy French blue were seen to leap forward, and it was known that the Excelsior boys were making a dash at the battery. The gunners saw the movement, began to limber up their pieces and succeeded in galloping away with four of them. But the two remaining guns could not be handled quickly enough, and the Excelsiors took them with a rush and a cheer, and in such excellent spirits that one of them was the moment after sitting astride of each gun and waving his cap in token of victory. The battle-flag of one of the Georgia regiments, and three hundred prisoners, were also captured in this gallant dash, which effectually showed how little the spirits of the Army of the Potomac had been damped by recent misfortunes. General Heintzelman lost his horse by the last fire of one of the captured pieces, and at the same time received a wound in the arm--fortunately not serious. The repulse of the rebels was now complete. Longstreet was compelled to "retire" and not by any means in "good order," leaving the field with its dead and wounded, and many arms and other trophies, in the possession of the Federal forces. Of course this success could not be followed up, the object of the battle having been to secure an uninterrupted line of march to the James River. And of course the Union generals were well aware that while the rebels possessed any remaining strength, they would not give up their cherished object of crippling or destroying the main body before it could reach the shelter of the river and the gun-boats. Fresh troops would be brought up; and but little time would be allowed the Federal troops to recover from the fatigue and excitement of that arduous morning. The rebel plan evidently was to give the Federal forces no rest--to precipitate fresh masses of their own troops continually upon them, when weary and exhausted with previous fighting; and when they were at last fairly worn out and incapable of further exertion, to "gobble them up" (to use an expressive, though not elegant phrase) or destroy them in detail and at leisure. The theory was admirable, and both brain and heart were necessary to prevent its being carried out in successful practice.