The ‘Spanish ulcer’ forced Napoleon to station 300,000 men in the Iberian peninsula in the winter of 1808; the number rose to 370,000 for the spring offensive of 1810 and to 406,000 in 1811, before falling to 290,000 in 1812 and to 224,000 in 1813. Except at the very beginning, these were troops he simply could not afford to spare.
