The War of the First Coalition (1792–1797) was the first major effort of multiple European monarchies to contain Revolutionary France. France declared war on the Habsburg monarchy of Austria on 20 April 1792, and the Kingdom of Prussia joined the Austrian side a few weeks later. These powers initiated a series of invasions of France by land and sea, with Prussia and Austria attacking from the Austrian Netherlands and the Rhine, and Great Britain supporting revolts in provincial France and laying siege to Toulon. France suffered reverses (Battle of Neerwinden, 18 March 1793) and internal strife (Revolt in the Vendée), and responded with extreme measures: the Committee of Public