The news of Wellington's momentous victory at Vitoria on 21 June 1813 reached London in early July. The celebration spawned an expectation of a rapid conclusion to events in the Peninsula. His Majesty's Government gave authority for Wellington to invade France and made noises and plans for the redeployment of the Peninsular Army in support of Russia and Prussia. Wellington, however, did not see things in quite the same way. His army was worn out and there remained sizeable French forces in Spain, so what followed had to be a carefully thought out and planned campaign.
The invasion of...