Vermillion Bayou LA008

supportedunresolved Irwin says Grover sighted Green's rear guard crossing the Vermilion early in the afternoon; NPS says Banks sent two columns by different roads that morning and that one column reached the bayou while the bridge was burning; NPS gives no clock for the contact. Irwin says Banks felt the want of mounted troops on the plains.

Attributed observation from a history and a summary; no dispatches inspected. Irwin's early-afternoon sighting and NPS's morning dispatch of the columns are recorded as written; the clock of contact is not resolved.

supportedunresolved Taylor says his exhausted troops and teams rested from Thursday afternoon until midday Friday and that the rear guard later enabled an extensive train to cross the Boeuf; Irwin says Grover spent April 18 rebuilding the bridge.

Movement statements from an interested report and a history; not returns.

supportedunresolved Taylor had the bridges burned once his train and troops were over; Irwin says the Confederates were posted to prevent the rebuilding and judges that more cavalry would have saved the bridge.

Stated aims from an interested report and a history; Irwin's cavalry judgment is counterfactual.

disputedpost_outcome The frozen result reads Union victory and the live result Union Victory. NPS says Confederate artillery forced the Union troops back and that the Confederates retreated after dark having slowed the advance; Irwin says Dwight drove off the enemy; Taylor says the retreat resumed on Friday.

Retain the original result and engagement interval; later movements and campaign contribution are different measures. No new probabilities or individual causal credit. The accounts differ on the course of the artillery fight.

disputedpost_outcome The frozen casualty text reads Unknown; the live field reads zero. Irwin says Dwight lost one killed and five wounded; Grover's three-day return of 353 (LA007) includes April 17. Taylor gives no figure.

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. Dwight's figure is one brigade's; Grover's return overlaps LA007 and is not split.

supportedunresolved Irwin says Grover commanded the pursuit on the Vermilion road while Banks went by Saint Martinsville with Weitzel and Emory, and that Dwight's skirmishers and two batteries drove off the defenders. Taylor credits Green with the rear guard. The frozen commanders are Major General Richard Taylor and Brigadier General Cuvier Grover, as on the live page.

Command roles from a history and an interested report; the listed commanders do not receive automatic sole credit.

unknownunresolved

No inspected return establishes matched personnel at a common opening boundary. The frozen side-specific numerical strength bounds are blank (missing_numeric_strength). No figure in this pass is adopted as a simultaneous opening force.

supportedunresolved The frozen force field reads 4th Division, XIX Army Corps, Army of the Gulf [US] and District of Western Louisiana [CS]; the live field reads zero. Irwin says Banks's united force outnumbered Taylor's three to one on April 15, that Grover advanced on the Vermilion with his main body reinforced by Gooding's brigade, and that Taylor's army was melting away by desertion; Taylor says nearly all of Fournet's battalion deserted with their arms. No inspected passage gives a count for the action.

A ratio and unit identifications from a history and an interested report. None is adopted as a matched opening strength. The live zero is not measured absence.

disputedunresolved NPS says Taylor crossed the bayou and destroyed the bridge; Irwin says he camped on the high ground on the north bank and burned the bridges, with the prairies beginning beyond New Iberia. Taylor posted four guns on the heights and sharpshooters along the upper bank. The sources place the burning differently: Irwin's p.122 puts the crossing and burning on April 16, and Taylor had the bridges burned once all were over and rested from Thursday afternoon (April 16, 1863 was a Thursday); Irwin's p.124 says the bridges were in flames before Grover could overtake the rear guard on April 17, and NPS says a column reached the bayou while the bridge was burning.

Ground described by a summary, a history and an interested report; no map verification. The burned bridges were Taylor's act, so the phase is left unresolved. The date of the burning differs between the passages and is not resolved.