By dark on July 1, the field belonged to the North. Every Confederate charge had been broken; the dead and wounded covered the slope below the guns; Lee’s army had thrown itself at Malvern Hill and bounced off with thousands of casualties and nothing to show. By every measure of the battlefield, the United States had won, clearly, and at far lower cost than the enemy. And then the winning army got up in the dark and continued its retreat.

The count was lopsided in the North’s favor. Union losses came to roughly 3,000 men, killed, wounded, and missing. Confederate losses ran far higher, somewhere in the range of 5,300 to 5,650, the price of sending brigade after brigade up an open hill at massed cannon. Lee had lost nearly twice as many men as McClellan and gained not one foot of the crest. On the field, Malvern Hill was a one-sided Union tactical victory, a tactical victory being a win in the actual fight on the ground, as opposed to a strategic one, which is winning the larger goal the whole campaign was fought for. It was the kind of defensive win generals study for a century afterward.

The victorious commander was not even there to see it. McClellan had left the immediate battlefield before the main fighting, going aboard the gunboat USS Galena on the James River and riding off to inspect Harrison’s Landing, the spot downriver where he meant to plant the army. Command on the hill fell to Brigadier General Fitz John Porter (North), his V Corps commander; a corps was the largest building block of the army, several divisions together, the unit just below the whole army itself, and Porter’s V Corps ran perhaps fifteen thousand men. Porter ran the defense, lined up the infantry around Colonel Henry J. Hunt’s (North) guns, and won the battle. McClellan’s absence from the field of his own great victory became a thing his enemies never let him forget; years later, during his run for president in 1864, his critics were still mocking him for sitting on a gunboat while other men fought.

When McClellan’s orders came down, they stunned the men who had just won. The army would not turn and drive back toward Richmond. It would keep retreating, abandon the hill it had just defended so well, and march on through the night to Harrison’s Landing on the James. Some of his subordinates objected; they had just shattered Lee’s attacks and wanted to push the other way, back toward the Confederate capital. McClellan overruled them. Around eleven at night the army pulled off Malvern Hill and marched away in heavy rain, tearing down a bridge behind it, and reached Harrison’s Landing the next day under the protection of the gunboats. The Seven Days were over. Lee thought about chasing and let it go, citing the rain and his own exhausted, bled-white army; Thomas J. “Stonewall” Jackson (South), Lee’s most aggressive corps commander, reportedly wanted to pursue and was overruled in turn.

The battle left a lesson in iron that outlived everyone on the hill, and it was about the cannon. Hunt had shown what massed artillery could do: hold a dedicated reserve of fresh batteries behind the line, rotate them forward as the front guns burned through their ammunition, and pour converging fire across open ground so that no infantry charge could ever cross it. That became the template for how the Union handled its guns for the rest of the war. The Confederates had taught the opposite lesson by failing. Their practice of parceling batteries out to individual brigades meant that of some forty-five guns on the field, only six or eight were ever firing at once, so they could never mass enough metal to silence Hunt. Lee took the point. After the Seven Days he reorganized his artillery into battalion-sized units that could be gathered and aimed together instead of scattered brigade by brigade. Malvern Hill earned its place in the textbooks not just as a slaughter but as the day that changed how both armies thought about cannon.

The small story and the big story split apart here. McClellan had won the battle. But Lee had won the week. In one week of relentless fighting, six battles, the last of them a defeat, Lee had taken an army that started within sight of Richmond’s church steeples and shoved it all the way back across the Peninsula to cower under naval guns on the James, ten miles from where it began. The threat to the Confederate capital was gone. The Peninsula Campaign, the North’s grand effort to win the war by taking Richmond, was effectively finished; the Army of the Potomac would dig in at Harrison’s Landing and never resume the advance. By the tally of blood, Malvern Hill went to the North. By the tally of the map, who saved his capital and who got driven away from it, the whole campaign went, decisively, to the South. It would be roughly two years before Union forces came that close to Richmond again.

The consequences rolled outward from there. Lincoln began losing faith in McClellan, the general who kept winning ground and giving it back; a new Union army under Major General John Pope (North) was already forming for a fresh overland push. Lee, meanwhile, reorganized his victorious army and turned north. The war in the East was about to leave the Peninsula entirely and swing toward a new collision in northern Virginia, the campaign that would end at Second Bull Run that August, a major battle Lee would also win, driving the Union out of northern Virginia again.

Our success has not been as great or complete as we should have desired.

McClellan won the last battle and lost the campaign. He saved his army and surrendered the prize it had come for. Both halves were true at once, and the South would take that trade every time, though it bought that week of deliverance with thousands of its own dead piled on an open hill, and could not yet know it was only buying time.