While the British were still occupying the defences on Morne Palmiste, intelligence was brought to Sir James Leith that the French Commander of Grandeterre, with the whole of his available force, was moving in rear of the 1st and 2nd Brigades to endeavour to form a junction with the main body of the enemy at Morne Houel. The detachment of the 1st West India Regiment was at once despatched to reinforce the rear-guard, and to occupy in force all the passes of the Gallion, a river running through a formidable ravine at the foot of Morne Palmiste. The troops from Grandeterre being thus cut off, endeavoured to form a junction by unfrequented paths through the woods; but, being met at every point by the skirmishers of the 1st West India Regiment, who searched the woods in every direction, they were compelled to abandon the attempt and retire at dusk.
The night closed in with torrents of rain, and the British, having been told off in columns in readiness to attack the formidable position of Morne Houel at daybreak next morning, bivouacked on the ground, without shelter, and drenched to the skin. About 11 p.m., the Comte de Linois sent a messenger to propose terms of surrender; but nothing being definitely settled, the troops were put in motion at daybreak on the 10th. As they drew near to the works, however, the French hoisted the British flag on Morne Houel in token of surrender, and the position was occupied without resistance. This success put an end to the active operations.
The British loss in this, the third invasion of Guadaloupe, amounted to 16 killed and 40 wounded. The 1st West India Regiment suffered no loss.
The following general order was issued, dated Head-Quarters, Government House, Basseterre, Guadaloupe, 10th August, 1815: "The Commander of the Forces congratulates the army on the conquest of Guadaloupe being accomplished, and desires the generals and other officers, and the troops employed on that important service, to accept his best thanks for the gallant, zealous, and active manner in which they have compelled the enemy to surrender.
"It is certainly a matter of gratifying reflection to the troops employed, not only that a colony of such importance should be placed under the British flag, but that the exertions of the army have, in two days, defeated all the preparations and force of the enemy; thus sheltering the peaceable inhabitants from a formidable and sanguinary system of revolutionary violence which had been practised against their persons and property, and which threatened the entire destruction of social order.
"Lieutenant-General Sir James Leith will not fail to represent the steadiness and good conduct of the troops to H.R.H. the Commander-in-Chief."
Guadaloupe, however, was not at once reduced to a state of tranquility. A number of French soldiers, who had deserted previous to the surrender of the island, took refuge in the woods, whence they carried on a desultory and ferocious war against the British posts. The 1st West India Regiment, being composed of men better able to support the hardships of a guerilla war, carried on in a country naturally difficult, during the height of the tropical rains, was continually employed against these insurgent bands, and several men were killed and wounded in unknown and forgotten skirmishes.
Major Cassidy and Captain Winkler were each presented with a sword of honour by the major-general; and the order of the Fleur de Lys was transmitted to them by Louis XVIII., for their services in Guadaloupe.
Major Cassidy and the detachment of the 1st West India Regiment, remained in Guadaloupe until the 10th of October, 1815, on which day they embarked for Barbados, arriving at that island on the 26th. The regiment being then very much below its strength, on account of the heavy losses which it had sustained during the expedition to New Orleans, it was determined to transfer the majority of the privates who remained to the 3rd, 4th, 6th and 8th West India Regiments, and reform the regiment from a body of some 700 American negroes, who, in the late war with the United States, had served with the British, and had been temporarily organised as Colonial Marines.
On the 14th of December, the skeleton of the regiment embarked in H.M.S. Niobe for Bermuda, where the Colonial Marines were then stationed, and arrived at St. George's on the 9th of January, 1816. It was only then discovered that the number of men with whom it was intended to reform the regiment, did not exceed 400; most of whom were of but poor physique, and, moreover, unwilling to engage. At first the authorities determined to force these men to enlist, but ultimately the whole plan was abandoned; and the skeleton of the regiment left Bermuda on the 18th of March to return to the West Indies. It arrived at Barbados on the 1st of April; and the men who had already been transferred being sent back to it, the corps was completed with drafts from the late disbanded Bombor Regiment.