It was in February 1758, in the middle of the Seven Years' War. The British Mediterranean fleet in that month was blockading a French squadron that had sought shelter in the Spanish naval harbour of Carthagena. The squadron, numbering seven ships of the line and two frigates, had set sail from Toulon in January to reinforce the French fleet on the coast of Canada, and assist in the defence of Louisbourg, Cape Breton, which, as was known at Versailles, was to be attacked in force in the following summer. They counted on being able to evade the British Mediterranean fleet and give it the slip by running through the Straits of Gibraltar under cover of a dark winter's night. But _ils se faisaient un tableau_, that fault against which Napoleon in later days was always cautioning his generals. It all depended on the chance of their getting past Gibraltar unseen. Unfortunately for the French plans, the British Admiralty were well aware of what was to be attempted. The fitting-out of the squadron at Toulon had been carried on with the greatest secrecy, but not so secretly that the British admiral at the head of the Mediterranean fleet had not learnt all about it. Admiral Osborn had also been warned from home of the probable destination of the French ships. The result was that when the French came they found him cruising with twelve line-of-battle ships a little to eastward of the Rock, and with a chain of look-out frigates stretching right across from Ceuta to Cape de Gata. M. de la Clue, the French admiral, found his way out of the Mediterranean barred, and having only seven ships of the line with him to the British commander's twelve, he turned aside and ran into the 'neutral' harbour of Carthagena.[2] He only got inside the port in the nick of time. Just as M. de la Clue's ships let go anchor within the Spanish batteries. Admiral Osborn's ships, duly warned by signals from their look-out frigates of every movement of the French squadron, came hastening up. De la Clue sent off an urgent appeal for reinforcements, and in response five fresh ships of the line and a frigate were despatched from Toulon, in charge of the Marquis du Quesne, _Chef d'Escadre_, or, as we call the rank, Commodore. With these additional ships De la Clue would have the same numbers exactly as his adversary, and should, the French considered, be able to fight his way out. The Toulon ships sailed for Carthagena on the 25th of February with the idea of running the gauntlet of the blockading fleet and joining M. de la Clue at night. Again, however, Admiral Osborn was forewarned of the enemy's approach, and his look-out frigates did their work. Two of the French ships, pushing ahead of the others, managed, during the night of the 27th of February, to get past the British scouting frigates off Cape Palos and turn into Carthagena unseen, but the main French force, three ships of the line and the frigate, were caught in the act.