This plan and instructions have been given rather at length, because they have always been looked upon as models, and have been copied into foreign historical works, and adopted upon several other occasions.

Cadiz became much straightened for provisions, in consequence of having so large a fleet to victual. To remedy this evil, especially in regard to his own fleet, Napoleon had ordered shipments to be made to Nantes, Bordeaux, and other ports in the Bay of Biscay. The carriers were vessels under the Danish flag, that landed their cargoes at small ports in the south of Spain, whence they were easily conveyed to Cadiz. As some check to this, a vigorous blockade had been adopted by Collingwood, and maintained by his successor who considered it a more likely way of driving the combined fleets to sea than a bombardment of Congreve rockets, as had at one time been contemplated. The arrival of a number of frigates enabled Nelson to prosecute this blockade of the coasting trade more successfully. On the 10th of October two line-of-battle ships, and on the 13th two more, joined Nelson; and he had now twenty-nine sail-of-the-line off Cadiz, and five at Gibraltar. This was the highest number his fleet reached.

On the 10th the allied fleet had moved out to the entrance of the harbor, and evinced a disposition to put to sea at the first opportunity.

Four days after, Lord Nelson was obliged, owing to orders from England, to send there Sir Robert Calder, in the Prince of Wales; and on the 17th was obliged to send the Donegal to Gibraltar, for water. This done, he had twenty-seven sail-of-the-line (not all in very good order, or well manned), four frigates, a schooner, and a cutter. There were in his fleet three 100-gun ships; the Victory, his own flag-ship; the Royal Sovereign, Vice-Admiral Collingwood; and the Britannia, Rear-Admiral the Earl of Northesk. Then came four 98-gun ships; one 80, sixteen 74s, and three 64s, which formed the line-of-battle.

On the very day on which Lord Nelson took command of the fleet a courier had arrived at Cadiz, with the order of the French Emperor for Villeneuve to put to sea. These orders had been issued about the middle of September, and required that the French ships should pass the Straits of Gibraltar, land the troops on the Neapolitan coast, sweep the Mediterranean of all British commerce and cruisers, and then enter Toulon, to re-fit and re-victual.

Although Villeneuve’s instructions contained no mention of the Spanish fleet, it is natural to suppose that they would be glad to avail themselves of the exit of a formidable French fleet to effect a junction with seven sail-of-the-line of theirs, which were blockaded in the port of Carthagena. Every exertion was, therefore, made to fill the complements of the fleet, which had otherwise been ready for some time. Of the vessels which had been in Sir Robert Calder’s action, one, the Argonauta, had been repaired and refitted, but the damage to the other, the Terrible, proved of so serious a nature that she was disarmed, and her crew divided among the short-manned ships.

All these details may seem tedious, but are necessary to a correct understanding of this, the most important naval battle of the century.

To return a little. On the 10th of October, the French troops having re-embarked, the combined fleet moved to the entrance of Cadiz harbor, to be ready for a start at a moment’s warning. Hard westerly gales continued until the 17th. At midnight of that date the wind shifted to the eastward, and on the 18th of October Admiral Villeneuve informed the Spanish Admiral Gravina of his intention to put to sea on the following day; and had a strong line of gunboats drawn up across the mouth of the harbor.

On October 19th the Allied fleets, by signal from the Commander-in-chief, began getting under way, at seven o’clock in the morning. There was a fair breeze, but light, and the British reconnoitring frigates at once saw and reported the movement. Owing to the light wind, only twelve ships got out, and these lay becalmed until afternoon, when a breeze sprang up from the west-north-west, and the twelve stood to the northward, accompanied closely by the two English frigates on guard. At daylight the next morning the rest of the combined fleet left Cadiz, making, with the twelve already outside, thirty-three sail-of-the-line, five frigates, and two brigs. They had a light southeast wind, while the ships in the offing, as is frequently the case on this coast, had the wind south-southwest.

The French had four 80-gun ships, and fourteen 74s, with the frigates and brigs. The Spanish had one 130-gun ship; two of 112 guns; one 100; two 80s; eight 74s, and one 64.