Grant, owing to the nature of the field, was unable to get all his numbers into battle at once.
But when the twilight began to show Dick believed that victory was at hand.

They had not yet driven Bowen out, but they were pressing him so close and hard, and Grant was securing so many new positions of advantage, that the Southern leader could not make another such fight against superior numbers in the morning.
Twilight turned into night and Bowen and his men, who had shown so much heroism, retreated in the dark, leaving six guns and many prisoners as trophies of the victors.
It was night when the battle ceased.

Cannon and rifles flashed at fitful intervals, warning skirmishers to keep away, but after a while they too ceased and the Union army, exhausted by the long march of the night before and the battle of the day, threw itself panting upon the ground.
The officers posted the sentinels in triple force, but let the remainder of the men rest.
As Dick lay down in the long grass two or three bullets dropped from his clothes and he became conscious, too, that a bullet had grazed his shoulder.

But these trifles did not disturb him.

It was so sweet to rest! Nothing could be more heavenly than merely to lie there in the long, soft grass and gaze up at the luminous sky, into which the stars now stole to twinkle down at him peacefully.
"Don't go to sleep, Dick," said a voice near him.