Peninsular War

The Peninsular War (1808–1814) (known as War of Independence in Spain and as French Invasions in Portugal) was a major conflict during the Napoleonic Wars, fought in the Iberian Peninsula with Spanish, Portuguese, and the British forces fighting against Napoleonic French.

Role of intelligence

Intelligence played a large part in the successful prosecution of the war by the British after 1810. Spanish and Portuguese guerrillas were asked to capture messages from French couriers. From 1811 onwards, these dispatches were often either partially or wholly enciphered. George Scovell of Wellington's General Staff was given the job of deciphering them. At first the ciphers used were fairly simple and he received help from other members of the General Staff. However beginning in 1812, a much stronger cipher originally devised for diplomatic messages, came into use and Scovell was left to work on this himself. He steadily broke it, with the result that knowledge of French troop movements and deployments was used to great effect in most of the engagements described above. The French never realised that the code had been broken and continued to use it until their code tables were captured at the battle of Vitoria.

Related Topics:
1810 - 1811 - George Scovell - 1812

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