A strong current had driven the transports so far to the leeward that it was not practicable to land the centre division till the following morning. Major-General Campbell was meanwhile on his march, and his progress was only feebly opposed by about 500 of the enemy, who ultimately retired from Angier's Plantation to Morne Chabot, and allowed him to effect a junction with the centre division. The current having acted still more powerfully on the vessels which conveyed the third division, under Brigadier-General Morshead, two or three days elapsed before the disembarkation in Ance la Raye could be entirely executed. The troops at length took up their appointed station, and thus held Morne Fortune invested on its southern side.

To complete the investment on the northern quarter it was necessary to obtain possession of Morne Chabot, which was one of the strongest posts in the vicinity of Morne Fortune. At midnight of the 27th, therefore, two columns, under Brigadier-Generals Moore and Hope, were despatched to attack the Morne on two opposite sides; and, by this means, not only to carry the position, but likewise to prevent the escape of the troops by which it was defended. This plan, the complete success of which would have materially diminished the strength of the Republican force, was in part rendered abortive by a miscalculation of time. The column of Brigadier-General Moore, consisting of seven companies of the 53rd Regiment, 100 of Malcolm's Rangers, and 50 of Lowenstein's,[23] advanced by the most circuitous route; while Brigadier-General Hope, with 350 men of the 57th, 150 of Malcolm's Rangers, and 50 of Lowenstein's, took the shorter road. Misinformed by the guides, Brigadier-General Moore's column fell in, an hour and a half sooner than it had expected, with the advanced picket of the enemy, who were thus put on their guard. At the moment when they were discovered, the troops, in consequence of the narrowness of the road, were marching in single file, and to halt them was impossible. In this state of things their leader resolved not to give his opponents time to recollect themselves, but to fall on them with his single division. The spirit of the soldiers fully justified the gallant resolution of their commander. Having been formed as speedily as the ruggedness of the ground would admit of, they proceeded to the assault. The Republicans made a stubborn resistance, but it was an unavailing one, as they were finally driven from the Morne with considerable loss. Nevertheless, as the second column did not arrive till the combat was over, the fugitives succeeded in making good their retreat. On the following day the victors also occupied Morne Duchasseaux, which is situated in rear of Morne Fortune.

In the hope of obtaining some advantage to counterbalance this misfortune, the enemy, on the 1st of May, made a brisk attack on the advanced post of grenadiers commanded by Lieutenant-Colonel MacDonald, of the 55th Regiment. They were, however, repulsed with much slaughter, though not till forty or fifty men, and several officers, were killed or wounded on the side of the British, among them being Captain Coghlan, 1st West India Regiment, attached to the 48th Regiment, who was wounded.

At the south side of the Morne Fortune the enemy had erected batteries, which precluded any vessels from entering into the bay of the Grand Cul de Sac. To open this bay to our fleet was an object of much importance, as at present it was necessary to convey the artillery and stores from a great distance, which could not be done without the previous labour of opening roads through an almost impracticable country. It was, therefore, resolved to make an attempt on these batteries. The principal attack was to be conducted by Major-General Morshead, whose division, in two columns, was to pass the river of the Grand Cul de Sac; the columns of the right at Cools, and that of the left at the point where the waters of the stream are discharged into the bay. To second this force, Brigadier-General Hope, on the night of the 2nd of May, was to advance from Morne Chabot with 350 men of the 42nd Regiment, the light company of the 57th, and part of Malcolm's Rangers, the whole being supported by the 55th Regiment, which was posted at Ferrands. A part of the squadron was likewise to lend its assistance, by keeping up a cannonade on the works of the enemy. Before the time arrived for putting this plan into execution, Major-General Morshead was taken ill, and the command devolved upon Brigadier-General Perryn. No change, however, took place in the arrangements which had been formed.

"At dawn of day, the division under Brigadier-General Hope began to accomplish its part of the service by carrying the battery Seche, which was situated within a short distance of the works of Morne Fortune. The assailants suffered so little in the assault, that they would scarcely have had anything to regret, had it not been for the fall of the gallant Lieutenant-Colonel Malcolm.[24] On the south side of the Morne, and at the extremity of the line of attack, Colonel Riddel, who led the column of the left, made himself master of the battery of Chapuis, and established himself there. Had the remainder of the project been as well executed, the proposed object would have been completely attained. Unfortunately, however, from some unexplained cause, the division which was the connecting link of the whole, that which was entrusted to Brigadier-General Perryn, did not perform its allotted part, by crossing the river at Cools. The consequence of this was that the victorious columns were left insulated, and would have been exposed to no trivial danger, had the enemy felt a sufficient reliance upon their own strength to incite them to act with the requisite promptitude and vigour. Painful, therefore, as it was to retire before a routed foe, the British troops were compelled to abandon the batteries which they had won, and to fall back upon their original stations. The ships at the same time returned to their former anchorage. Our loss on this occasion was 105 men; of whom only a very few were among the slain."

The Vigie was now the only post occupied by the enemy in the vicinity of Morne Fortune, and this was attacked by the 31st Regiment on the night of May 7th; the assault, however, being repulsed with a loss of 200 men. The main position was now invested by regular siege works, and the task which the British had to perform was attended with no small difficulty. "The country itself was of the most inaccessible kind, the chain of investment was ten miles in extent, all the roads that were necessary were to be made, of carriages there were none, horses were scarce, and the Republicans had been industrious in availing themselves of all the natural obstacles to our progress, and in creating as many others as their ingenuity could contrive." Malcolm's Corps rendered good service on these works, and the men being better able to stand the fatigue and exposure than Europeans, were constantly employed.

By May 16th, the first parallel was completed, and on the morning of the 24th, the 27th Regiment, supported by the 53rd and 57th, succeeded in effecting a lodgment within 500 yards of the fort. The Governor, acknowledging that further resistance was futile, demanded a suspension of hostilities; terms of surrender were agreed upon, and on May 26th, 2000 men marched out as prisoners of war. One hundred pieces of ordnance, ten vessels, and large stores of ammunition fell into the hands of the British.

Sir Ralph Abercromby sailed from St. Lucia on the 4th of June to the relief of Grenada and St. Vincent, leaving Brigadier-General Moore for the pacification of the first island with the 31st, 44th, 38th, and 55th Regiments, O'Meara's corps of Rangers,[25] and the German Yagers.