On board the fleet were a large number of troops, under the command of the Duke of Ormond. On the 12th August they anchored before the harbour of Cadiz next day the Duke of Ormond sent in a trumpeter with a letter requiring the governor to surrender. The brave governor replied that as he had been appointed to the command of the place by his lawful sovereign, he would not yield it up as long as he could hold it. On the 15th the Duke of Ormond therefore landed with the troops, and in a few days took possession of the forts of Saint Katharine and Saint Mary. It being found difficult to approach Cadiz while the Spaniards were in possession of Matagorda Fort, an assault was ordered. The Spaniards defended the place bravely, and it was found that the English force was far too small to hope for success. The troops were therefore re-embarked with the intention of returning home. Soon after this, while the fleet was off the coast of Portugal, Captain Hardy of the "Pembroke" brought the intelligence that the galleons from the West Indies had put into Vigo Bay, under convoy of a French squadron. Sir George Rooke immediately called a council of war, and it was resolved to make an attack at once on the enemy in the port of Vigo. A strong gale of wind, however, drove the fleet to the north of Cape Finisterre, which prevented their getting off Vigo before the 11th of October. The passage into the harbour was extremely narrow, and well defended by batteries on both sides. Across the entrance a strong boom also was laid, at each end of which was moored with chains a seventy-four-gun ship. Nearer the boom were laid, also moored, five ships, each carrying sixty to seventy guns, with their broadsides to the sea to defend the passage. The shoals and sand-banks, and the shallowness of the water within the harbour, made it dangerous for ships of the first and second rates to enter without a leading wind.