Gaines' Mill VA017
1862-06-27 to 1862-06-27 · VA · Peninsula Campaign [March-July 1862] · frozen result: Confederate · NPS summary (as listed)
This was the third of the Seven Days' Battles. On June 27, 1862, Gen. Robert E. Lee renewed his attacks against Porter's V Corps, which had established a strong defensive line behind Boatswain's Swamp north of the Chickahominy River. Porter's reinforced V Corps held fast for the afternoon against disjointed Confederate attacks, inflicting heavy casualties. At dusk, the Confederates finally mounted a coordinated assault that broke Porter's line and drove his soldiers back toward the river. The Federals retreated across the river during the night. Defeat at Gaines' Mill convinced McClellan to abandon his advance on Richmond and begin the retreat to James River. Gaines' Mill saved Richmond for the Confederacy in 1862.
Command responsibility (ledger v2)
US: Fitz John Porter
Grade A under rule 2; echelon corps_or_wing.
A cited passage states the command.
Brigadier Generalarnold-cwsac-commanders, battle VA017, belligerent US, fullname Fitz John Porter; column rank · snapshot
6c587c298717…Porter's V Corps, which had established a strong defensive linearnold-cwsac-battles, battle VA017; column description · snapshot
952b5d08402a…Confederate: Robert E. Lee
Grade A under rule 2; echelon army.
A cited passage states the command.
Generalarnold-cwsac-commanders, battle VA017, belligerent Confederate, fullname Robert E. Lee; column rank · snapshot
6c587c298717…Gen. Robert E. Lee renewed his attacksarnold-cwsac-battles, battle VA017; column description · snapshot
952b5d08402a…Side strength (ledger v3)
US: grade B, 36,790 (29,080–42,310)
basis_mixedcompiled_dependencederivation_unknownwhole_engagement_leakage
| Input | Class | Printed | Basis | Bound | Codes | Passage |
|---|---|---|---|---|---|---|
| us-lv-eff | B | 34,214 | reported_effective | Effectives estimated at 93 per cent. 34,214livermore-transcription-v1, p.83 (page image livermore-p83-image-v1) · snapshot e9fc742fdcb6… | ||
| us-lv-pfd | B | 36,790 | present_for_duty | Total present for duty, June 27 [6] 36,790livermore-transcription-v1, p.82 (page image livermore-p82-image-v1) · snapshot e9fc742fdcb6… | ||
| us-cw | B | 34,214 | reported_engaged | derivation_unknown | 34,214arnold-cwsac-forces, battle VA017, belligerent US; column description · snapshot a462f6be964b… | |
| us-nps | B | 34,214 | reported_engaged | derivation_unknown | dossier claim reported-force-scope |
Confederate: grade C, 57,020 (39,910–74,120)
basis_mixedcompiled_dependencederivation_unknownpost_start_informationsingle_inputwhole_engagement_leakage
| Input | Class | Printed | Basis | Bound | Codes | Passage |
|---|---|---|---|---|---|---|
| cs-lv | C | 57,018 | reported_effective | Total effectives, June 27 [7] 57,018livermore-transcription-v1, p.83 (page image livermore-p83-image-v1) · snapshot e9fc742fdcb6… | ||
| cs-cw | C | 57,018 | reported_engaged | derivation_unknown | 57,018arnold-cwsac-forces, battle VA017, belligerent Confederate; column description · snapshot a462f6be964b… | |
| cs-nps | C | 57,018 | reported_engaged | derivation_unknown | dossier claim reported-force-scope |
Dossier claims
Draft dossier, revision . Claims are extraction records with their quoted passages, not historical adjudication. JSON
information
unknownunresolved
No original reconnaissance, order or message chain was inspected to establish the commanders’ contemporary knowledge. Retrospective explanations of beliefs, surprise or missed opportunities are not independently verified information states.
logistics
supportedunresolved Webb says wagons had already been sent to the rear and some stores destroyed in anticipation of retreat.
Reported preparation during the developing operation, not an inherited logistical condition or causal score.
In anticipation of a retreat many of the wagons had already been sent to the rear and some stores destroyed.webb-peninsula-selections-v1, p.130 (OCR page markers; not checked against print) · snapshot
3be92161e849…objectives
supportedunresolved NPS describes Lee renewing attacks against Porter’s V Corps north of the Chickahominy.
Immediate target only; the narrative’s claim that the battle saved Richmond is not admitted as measured campaign contribution.
outcome
supportedpost_outcome The frozen result remains Confederate victory.
Retain the frozen outcome and engagement interval. A tactical result, later retreat, success at a local sector and campaign contribution are different measures. No causal effect, half-win or extra independent victory is inferred.
disputedpost_outcome The frozen casualty text reads 15,500 total (US 6,800; CS 8,700). The live NPS table reads 15587 total (US 6837; CS 8750;).
Preserve source versions and population boundaries. No original return was inspected to reconcile totals, categories, missing side breakdowns or reporting cutoffs. A zero display is not no losses; casualties and captured hospital populations are not opening strength. Do not add overlapping battle/component totals.
15,500 total (US 6,800; CS 8,700)arnold-cwsac-battles, battle VA017; column casualties_text · snapshot
952b5d08402a…responsibility
supportedunresolved NPS describes Porter’s reinforced V Corps holding through the afternoon before a coordinated Confederate assault at dusk.
Reinforced strength is not an unchanged opening population. Principal commanders receive no automatic share of all subordinate action.
Porter's reinforced V Corps held fast for the afternoonnps-va017-v1, Description · snapshot
ec662e8310b1…At dusk, the Confederates finally mounted a coordinated assaultnps-va017-v1, Description · snapshot
ec662e8310b1…strength
unknownunresolved
No inspected return establishes matched personnel at a common opening boundary. The imported numerical force estimates retain their original basis; they are not newly validated as opening counts.
supportedunresolved The frozen force field reads 91,232 total (US 34,214; CS 57,018); the live NPS table reads 91232 total (US 34214; CS 57018;).
These are source fields, not matched opening returns. Preserve vessel versus personnel units, unspecified formations and combined versus side totals. Shared NPS/CWSAC provenance supplies no independent confirmation; displayed zeros are not measured absence.
91,232 total (US 34,214; CS 57,018)arnold-cwsac-battles, battle VA017; column forces_text · snapshot
952b5d08402a…terrain
supportedunresolved Webb describes steep stream banks near Morell’s right and dense woods covering approaches to his position.
Attributed local geography; no verified map, exact field reconstruction or numerical terrain effect.
between steep bankswebb-peninsula-selections-v1, p.130 (OCR page markers; not checked against print) · snapshot
3be92161e849…The approaches were covered by dense woods, which furnished cover for the enemy's advance.webb-peninsula-selections-v1, p.130 (OCR page markers; not checked against print) · snapshot
3be92161e849…Open questions
- Original orders, personnel and casualty returns, contemporary message chains, disputed totals and precise command clocks remain deferred after the bounded follow-up. No OCR-to-print or map verification is claimed.
- Keep opening, reinforced, engaged, hospital, captured and vessel populations distinct. Source fields and retrospective judgments do not establish causal contributions.
- Preserve frozen outcomes and campaign membership, including combined/component rows; no automatic commander credit or battle/campaign double counting.