Napoleonic Wars War of 1808–1814, assisted by Spanish guerrilla ('little war') tactics. Anglo-Portuguese forces under Arthur Wellesley supported the Spanish, which campaigned successfully against the French armies, eventually driving them from Spain and allowing Britain to invade southern France. By 1815, the British Army played the central role in the final defeat of Napoleon at Waterloo. Beyond minor naval actions against British imperial interests, the Napoleonic Wars were much less global in scope than preceding conflicts such as the Seven Years' War, which historians term a "world war". In response to the naval blockade of the French coasts enacted by the British
Napoleonic Wars casualties the French Republic. Peninsular War: Invasion of Russia: The effect of the war on France over this time period was considerable. According to David Gates, the Napoleonic Wars cost France at least 916,000 men. This represents 38% of the conscription class of 1790–1795. This rate is over 14% higher than the losses suffered by the same generation one hundred years later fighting Imperial Germany. The French population suffered long-term effects through a low male-to-female population ratio. At the beginning of the Revolution, the numbers of males to females was virtually identical. By the end of the conflict only 0.857 males