Chickasaw Bayou MS003

supportedunresolved Greene says Confederate spies and detachments reported Sherman's progress twice a day, revealing the plan to Pemberton by December 23–24, while Sherman knew nothing of the Confederate reinforcements.

Retrospective reconstruction from the records; no inspected message log.

supportedunresolved Greene says Morgan had the only pontoon train in the command, and that Steele found his way blocked by Thompson's Lake, crossable only on a narrow corduroy causeway enfiladed by a Confederate battery. His division was therefore ordered to cross back in the transports and come up in support of Morgan.

Movement constraints from one retrospective history; no inspected engineer or transport record.

supportedunresolved Greene says Sherman meant to surprise Vicksburg and seize a point of the Walnut Hills while Grant held Pemberton near Grenada, and that the plan rested on surprise and cooperation, both of which miscarried.

Attributed plan from one retrospective history; no inspected orders.

supportedpost_outcome The frozen and live results read Confederate victory. NPS and Greene say the December 29 assault was repulsed and Sherman withdrew; Greene says he re-embarked on January 2 and relinquished command to McClernand.

Retain the original result and engagement interval; later movements and campaign contribution are different measures. No new probabilities or individual causal credit. The re-embarkation and change of command follow the interval.

disputedpost_outcome The frozen casualty text reads 1,983 total (US 1,776; CS 207); the live NPS field reads 1963 total (US 1776; CS 187;). In his account of the December 29 assault Greene gives the Union 'exact total' as 1,929 (191 killed, 982 wounded, 756 missing) without stating a date range. He gives Confederate losses for the skirmishing of December 27–28 and the assault of the 29th as 187 (57 killed, 120 wounded, 10 missing).

Original casualty returns were not inspected; preserve totals, categories, cutoffs and differences. No canonical reconciliation or casualty-based opening count; related actions must not be added without resolving population overlap. Greene's Confederate total matches the live field and differs from the frozen 207.

supportedunresolved Greene says only De Courcy's and Blair's brigades and one regiment reached the works, unsupported, while other brigades took a wrong direction, failed to bridge the lake or were not brought into action; M. L. Smith was wounded on the 28th. The frozen commanders are Sherman and Pemberton; the live heading ranks Sherman General against the frozen Major General.

Subordinate execution from one retrospective history; no listed commander receives automatic sole credit. The heading rank is not adopted.

unknownunresolved

No inspected return establishes matched personnel at a common opening boundary. The frozen side-specific numerical strength bounds are blank (missing_numeric_strength), and the live NPS zeros are not measured absence. No figure in this pass is adopted as a simultaneous opening force.

disputedunresolved The frozen force field names the Right Wing, XIII Corps, and the Department of Mississippi and East Louisiana; the live field reads zero. Greene gives Sherman's expedition about 32,000 men with 60 guns, says Sherman faced not less than 12,000 Confederates rather than the 6,000-man garrison, and that the brigades bearing the December 29 assault numbered not more than 6,000.

Expedition, defending-force and assaulting-force figures are different populations; none is adopted as a matched opening strength. Live zeros are not measured absence.

supportedinherited Greene says the bluff was fully two hundred feet high with an unbroken view of the bottom land, which was low alluvial land, overflowed at the highest river stages and filled at all times with bayous and swamps. He says there were only five practicable crossings in twelve miles, all commanded by Confederate batteries. NPS calls the Walnut Hills strongly defended.

Inherited ground at the landing; retrospective description without map verification or a numerical effect.