The British Government’s knowledge of the danger to which Andalusia was exposed, from the absolute want of troops to defend it, led to an untoward incident, which did much to endanger its friendly relations with the Junta. On hearing of the fall of Madrid, and of Moore’s retreat towards Galicia, Canning harked back to one of his old ideas of the previous summer, the notion that British troops might be sent to the south of Spain, if a safe basis for their operations were secured. This, as the Secretary of State for Foreign Affairs believed, would best be provided by the establishment of a garrison in Cadiz. It was all-important that this great centre of commerce should not fall into the hands of the French, and early in January it was known in London that there was no adequate Spanish force ready to defend the passes of Andalusia. If Napoleon had an army large enough to provide, not only for the pursuit of Moore, but for the dispatch of a strong corps for an attack on Seville, it seemed probable that the French might overrun Southern Spain as far as the sea, without meeting with serious opposition. Accordingly, Canning wrote to Frere, on the fourteenth day of the new year, 1809, to offer the assistance of a considerable British force for the defence of Andalusia, if Cadiz were placed in their hands. ‘The question of the employment of a British army in the south of Spain,’ he wrote, ‘depends essentially upon the disposition of the Spanish Government to receive a corps of that army into Cadiz. Without the security to be afforded by that fortress, it is impossible to hazard the army in the interior, after the example of the little co-operation which Sir John Moore represents himself to have received from the Spaniards in the north.... In consequence of the imminent danger, and of the pressing necessity for immediate decision arising from Sir John Moore’s retreat, and from the defenceless state in which you represent Andalusia to be, His Majesty’s Government have deemed it right (without waiting for the result of your communication with the Central Junta) to send a force direct to Cadiz, to be admitted into that fortress. Four thousand men under Major-General Sherbrooke are directed to sail immediately, and he is informed that he is to expect instructions from you on his arrival, containing the determination of the Spanish Government respecting his admission into Cadiz.... In the event of a refusal of the Junta to afford this proof of confidence, Major-General Sherbrooke is directed to proceed to Gibraltar[34].’ [34] Canning to Frere, Jan. 14, 1809 (Record Office).