A key element in British success was its ability to mobilise the nation's industrial and financial resources and apply them to defeating France. Although the UK had a population of approximately 16 million against France's 30 million, the French numerical advantage was offset by British subsidies that paid for many of the Austrian and Russian soldiers, peaking at about 450,000 men in 1813. Under the Anglo-Russian agreement of 1803, Britain paid a subsidy of £1.5 million for every 100,000 Russian soldiers in the field.