In April 1792, French armies invaded the Austrian Netherlands but suffered a series of setbacks before victory over an Austrian-Prussian army at Valmy in September. After defeating a second Austrian army at Jemappes on 6 November, they occupied the Netherlands, areas of the Rhineland, Nice and Savoy. Emboldened by this success, in February 1793 France declared war on the Dutch Republic, Spain and Britain, beginning the War of the First Coalition. However, the expiration of the 12-month term for the 1792 recruits forced the French to relinquish their conquests. In August, new conscription measures were passed and by May 1794 the French army had between 750,000 and 800,000 men. Despite high rates of desertion, this was large enough to manage multiple internal and external threats; for comparison, the combined Prussian-Austrian army was less than 90,000.