Soon, it was time for Sumner to commit his last division under Otis O. Howard. They would be reinforced by the Second Division of Samuel D. Sturgis of the IX Corps. Their attack was launched at 2:00 p.m. No more successful that those before them, they flattened themselves as close as possible to the dirt. Lt. L. N. Chapin of the Thirty-fourth New York describes being under artillery fire, their sense of impending doom and salvation. “We suppose there were seven or eight thousand men massed under that bluff. Perhaps an inscrutable Providence could study out what this move was for; but your correspondent has never yet heard a decent theory stated. Scarcely two hundred feet away, on this bluff, was a rebel redoubt with a cannon behind it. An officer on a white horse was riding around giving orders. You may be perfectly certain he had from seven to ten thousand deeply interested spectators. Not a moment elapsed before there was a puff of smoke from behind that redoubt, and a shell from a six-pounder went screaming over our heads. It never hit a man. Another and another followed, with the same result. It was evident that the piece could not be depressed sufficiently to rake us without the muzzle hitting the front of the redoubt. Then this pale horse and his rider came out from behind the redoubt, and surveyed our position, and went back. Then four men took hold of the piece, and rolled it out from behind the earthwork. It is said the judgment-day comes but once, and we all felt that it had come for us right then and there. It was a moment to be remembered forever. Now they have us for sure. The very next shot is sure to fetch us. Of all the thousands of men huddled there, every eye was fixed on that gun. The cannoneers take their positions, the process of loading and priming is gone through with, and then every head is bowed in silence, waiting for the awful messenger. It comes, like the shriek of an incarnate demon, it plowed its way into our ranks, burying us all in the dirt. Another and another followed in rapid succession, each one bringing death and destruction into our ranks. The air is filled with the groans and cries of mangled men. Every man of those thousands is clutching the earth, and trying to make himself thinner. It is a good thing, at times, to be a spare man. No one, then, wanted to be fatter. The first shot fired, after the gun was moved out, passed directly over our company (K); the next, coming in exactly the same line, fell a little short, striking just ahead of us, and doing terrible execution. Then the orderly sergeant, Jim Talcott, lying by my side, and trying to make himself thinner, said: ‘Now, boys, it’s our turn.’ And sure enough, with an ugly scream, that might have been heard up in Herkimer County, the next shot landed squarely in our company. Every inch of the ground was covered with blue men; but this ugly auger bored a hole right through. Deep into the earth it went, and then exploded. Scarcely a man in the company but received some souvenir. And all this time we were compelled to remain inactive, not firing a shot in return. There was not a man on all that blue field but would have volunteered in an instant to dash up that height, and had there been someone in high authority to authorize the movement, that one gun would have been silenced or captured in a moment. But, any way, the slaughter was destined not to continue for long. All this time, from the north side of the river, far away, our own cannons were booming, and the moment this one piece was rolled out from behind the breastwork, it became the target for all our artillery. There was one gun on our side, miles up the river, that we had heard booming at intervals all day. It must have been a sixty-two pounder; and a moment after the third shot of which I spoke had been fired, there came the boom of this great gun. The great shot sped on its awful mission, over miles of river and valley, and hill and meadow, and came down fair and square on top of the mischievous little six-pounder, and that instant exploded. The gun and carriage were destroyed, and all the men near it knocked out, including the white horse and his rider. Then all those ten thousand men rose, and shouted with great shout.”
At 3:00 p.m., it was time for Griffin’s Division of Dan Butterfield’s V Corps to storm Marye’s Heights. Leading the assault was Col. James Barnes’ First Brigade. Included in their number was Eighteenth Massachusetts’ Private Thomas Mann: “The first time we charged I fired once just as we turned to come back. Myself and Wm. Laird went further than any other man in the regiment. I think we went to within five rods [80 feet] of the stone wall, behind which the rebels were posted. I was hit five or six times by spent balls[;] two bullets smashed my rifle, one of them blowing the lock completely off... Another bullet went completely through my tin dipper and haversack, going through a chunk of salt-pork and six thicknesses of woolen bag in which the pork was wraped, and finally penetrated my overcoat. Amid such a perfect shower of bullets it was my luck to come off with my life.” Like their predecessors, they too were stopped and pinned down.