Fort Brooke FL004

1863-10-16 to 1863-10-18 · FL · Expedition to Hillsboro River [October 1863] · frozen result: Union · NPS summary (as listed)

CWSAC description
Two Union ships bombarded Fort Brooke on October 16 as a diversion, while a landing party under Acting Master T.R. Harris disembarked at Ballast Point and marched 14 miles to the Hillsborough River to capture several steamers. Harris and his men surprised and captured the blockade running steamer Scottish Chief and sloop Kate Dale. The Rebels destroyed the steamer A.B. Noyes to preclude her capture. On its way back to the ship, Harris's force was surprised by a detachment of the garrison, causing casualties.

Command responsibility (ledger v2)

US: A. A. Semmes

Grade A under rule 2; echelon flotilla.

Semmes, commanding the Tahoma, led the October 16 bombardment with the Adela and landed the shore party; Harris commanded the landing party (subordinate context). Rule 2, grade A.

Lieutenant Commander
arnold-cwsac-commanders, battle FL004, belligerent US, fullname A. A. Semmes; column rank · snapshot 6c587c298717…
On the 16th, the Adela in company, we Avent abreast of the batteries and shelled them at our leisure.
orn17-semmes-fort-brooke-selections-v1 · snapshot 65994dfd2728…
of Acting Master [T. R.] Harris, the executive officer of this vessel, who was in command.
orn17-semmes-fort-brooke-selections-v1 · snapshot 65994dfd2728…

Confederate: John Westcott

Grade A under rule 2; echelon detachment_or_post.

Westcott assumed command at Tampa on the 14th, before the bombardment of the 16th; Semmes calls him the commander at Tampa (rule 2, grade A).

Captain
arnold-cwsac-commanders, battle FL004, belligerent Confederate, fullname John Westcott; column rank · snapshot 6c587c298717…
I arrived here on Monday, 12th, and assumed command on Wed- nesday, 14th.
or28-1-westcott-fort-brooke-selections-v1 · snapshot f3dcaa08212d…
meeting Captain [John] Westcott, the commander at Tampa,
orn17-semmes-fort-brooke-selections-v1 · snapshot 65994dfd2728…

Side strength (ledger v3)

US: grade D: no usable figure (modelled in the rating runs)

whole_engagement_leakage

InputClassPrintedBasisBoundCodesPassage
us-landingbound100unknownlowerpartial_scopedossier claim reported-force-scope
us-westcott-estbound130unknownadversary_or_hearsay_estimatepartial_scopedossier claim reported-force-scope

Confederate: grade D: no usable figure (modelled in the rating runs)

whole_engagement_leakage

Dossier claims

Draft dossier, revision hillsboro-1863-review-correction-2026-09-25. Claims are extraction records with their quoted passages, not historical adjudication. JSON

information

supportedunresolved Semmes placed stakes to the north and east as if to land there, and says a Confederate force was sent that night to oppose that landing; the escape of two men from the burned vessels was the only thing that betrayed the landing party. Westcott had assumed command on the 14th, two days before the shelling.

Attributed knowledge from interested reports. No original reconnaissance, order or message chain was inspected to establish contemporary knowledge. Surprise in a summary does not independently establish what each commander knew.

with a view of deceiving the rebels, I placed some stakes to the northward and eastward, as if intending to land there.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
This had the desired effect, for that night quite a force was sent there to oppose a landing.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
The escape of two prisoners from one of the vessels burned was the only thing that showed the presence of our force.
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
I arrived here on Monday, 12th, and assumed command on Wed- nesday, 14th.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…

logistics

supportedunresolved Semmes found the Scottish Chief and the Kate Dale loaded with cotton and ready to run the blockade, and says their light draft would probably have let them elude him; his 200-pounder Parrott's fuzes acted badly. Westcott counts 126 shells fired on the 16th and says 57 rifles and other equipment were picked up after the action.

Cargo, ordnance and captured-equipment statements from the two reports; no returns inspected.

finding that the steamer Scottish Chief and the sloop Kate Dale were loaded with cotton and ready to run the blockade,
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
The vessels destroyed were of light draft, not over 1 feet, and would have probably eluded me.
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
The practice with the 200-pounder Parrott was beautiful, but the fuzes acted badly.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
throwing 126 shells in all,
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
Fifty-seven rifles, spy -glasses, rockets, &c. , have been picked up.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…

objectives

supportedunresolved Semmes's object was to destroy the blockade runners before they escaped; the shelling of the batteries and the stakes were diversions. NPS calls the bombardment of Fort Brooke a diversion for the landing party.

Stated plan from the Union report and NPS; the Confederate aim is to defend the post.

finding that the steamer Scottish Chief and the sloop Kate Dale were loaded with cotton and ready to run the blockade,
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
with a view of deceiving the rebels, I placed some stakes to the northward and eastward, as if intending to land there.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
The following morning, at daylight, we fired the heavy rifle gun, simply to keep the rebels busy.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
Two Union ships bombarded Fort Brooke on October 16 as a diversion,
nps-fl004-v1, Description · snapshot f6fd494d5131…

outcome

disputedpost_outcome The frozen and live results read Union victory. NPS says Harris's party captured the Scottish Chief and the Kate Dale and was surprised on its way back. Semmes regrets the loss but claims to have shown that blockade runners were not safe even up the Hillsboro River; Westcott says the Confederates burned the A. B. Noyes and badly whipped the party before it reached its boats.

Retain the original result and engagement interval; later movements and campaign contribution are different measures. No new probabilities or individual causal credit.

Union victory
arnold-cwsac-battles, battle FL004; column results_text · snapshot 952b5d08402a…
Union Victory
nps-fl004-v1, Results · snapshot f6fd494d5131…
Harris and his men surprised and captured the blockade running steamer Scottish Chief and sloop Kate Dale.
nps-fl004-v1, Description · snapshot f6fd494d5131…
I regret sincerely our loss, yet I feel a great degree of satisfaction in having impressed the rebels with the idea that blockade-running vessels are not safe even up the Hillsboro River.
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
Our men burned the boat [A. B. Noyes].
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
but before they got to and into their boats they were badly whipped,
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…

disputedpost_outcome The frozen casualty text reads Unknown; the live field reads 16 (US 16; CS 0). Semmes lists 3 killed, 10 wounded and 4 prisoners by name. Westcott reports 5 prisoners (one dying, one severely wounded) and believes about 50 were killed and wounded at the boats. Semmes also reports holding 2 prisoners of war and 5 blockade runners, one severely wounded, against the live CS 0.

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. Semmes's named list, the live 16 and Westcott's estimate differ.

Unknown
arnold-cwsac-battles, battle FL004; column casualties_text · snapshot 952b5d08402a…
16 total (US 16; CS 0;)
nps-fl004-v1, Estimated Casualties · snapshot f6fd494d5131…
Killed. — James Worrall, seaman, Tahoma; John Roddy, seaman, Adela; Joseph O’Donnell, seaman, Adela.
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
Wounded. — J. P. Randall, acting ensign, Tahoma;
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
Prisoners. — John Collins, master at arms, Tahoma: John McDonald, seaman, Tahoma; John Hilton, ordinary seaman, Tahoma , wounded; Thomas Donnelly, fireman, Adela.
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
I have 5 prisoners; 1 died this morning and 1 is severely wounded.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
We killed and wounded, it is believed, about 50 while they were get- ting to and into their barges.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
We have in our possession 2 prisoners of war and 5 blockade runners (one of them severely wounded),
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…

responsibility

supportedunresolved Semmes planned the operation and refers the shore action to Acting Master Harris, his executive officer, who commanded the landing party. Westcott commanded at Fort Brooke and says that with more men he could have captured the whole party. The frozen commanders are Lieutenant Commander A. A. Semmes (US, navy) and Captain John Westcott (CS).

Command roles from the two reports; neither listed commander receives automatic sole credit. Harris's report was read but not selected.

of Acting Master [T. R.] Harris, the executive officer of this vessel, who was in command.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
meeting Captain [John] Westcott, the commander at Tampa,
orn17-semmes-fort-brooke-selections-v1, p.573 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
if I had had more men I could have captured the whole concern.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
Lieutenant Commander
arnold-cwsac-commanders, battle FL004, belligerent US, fullname A. A. Semmes; column rank · snapshot 6c587c298717…
Captain
arnold-cwsac-commanders, battle FL004, belligerent Confederate, fullname John Westcott; column rank · snapshot 6c587c298717…

strength

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.

disputedunresolved The frozen force text names the Tahoma, the Adela and a landing force (US) and Company A, 2nd Battalion, Florida Volunteers (CS); the live field reads zero. Semmes says a force of 100, exclusive of officers and guides, was landed at Ballast Point. Westcott says 130 men landed, printed as '120 men and 20 guides', and that his own force was too small.

A landing-party count and an opponent's estimate that differ; no Confederate strength figure. None is adopted as a matched opening strength. The live zero is not measured absence.

Tahoma, Adela, and landing force [US]; Company A, 2nd Battalion, Florida Volunteers [CS]
arnold-cwsac-battles, battle FL004; column forces_text · snapshot 952b5d08402a…
0 total (US 0; CS 0;)
nps-fl004-v1, Forces Engaged · snapshot f6fd494d5131…
a force of 100, exclusive of officers and guides, was landed.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
they landed 130 men at Ballast Point — 120 men and 20 guides, traitors and negroes.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
My force here is too small.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…

terrain

supportedunresolved Semmes moved the landing from Old Tampa Bay to Ballast Point, about 5 miles below Tampa; Westcott says the party marched through the woods, dragging a boat 2 miles before abandoning it, to the steamer about 4 miles above the town; NPS gives a 14-mile march to the Hillsborough River.

Distances from the two reports and NPS; no map verification.

1 had to change the place of landing a force from Old Tampa Bay to Ballast Point, about 5 miles below the town of Tampa.
orn17-semmes-fort-brooke-selections-v1, p.572 (OCR page markers; not checked against print) · snapshot 65994dfd2728…
From the landing they marched through the woods (drawing a boat 2 miles and abandoned it) to the steamer of Captain Blakeny, about 4 miles above here.
or28-1-westcott-fort-brooke-selections-v1, p.735 (OCR page markers; not checked against print) · snapshot f3dcaa08212d…
marched 14 miles to the Hillsborough River
nps-fl004-v1, Description · snapshot f6fd494d5131…

Open questions