Reichenbach Convention with Prussia which allowed the Emperor to begin the reconquest of the Austrian Netherlands as long as its local traditions were respected. An amnesty was offered to all revolutionaries who surrendered to the Austrian forces. The Austrian army, under Field Marshal Blasius Columban, Baron von Bender, invaded in the United Belgian States and encountered little resistance from the population which was already discontented with the governance and infighting of the rebels. The Austrians defeated the Statist army at the Battle of Falmagne on 28 September. Hainaut was the first to recognise Leopold's sovereignty and other cities soon followed. Namur was captured on 24 November. The Sovereign Congress met for the final time on 27 November before disbanding itself. On 3 December, the Austrians accepted the surrender of Brussels and reoccupied the city, effectively marking the suppression of the revolution. Aftermath In the aftermath of the defeat of the United Belgian States, a convention was held at The Hague on 10 December 1790 to decide what form the Austrian reestablishment would take. The Convention, which included representatives of the Emperor and the Triple Alliance of the Dutch, British and Prussians, eventually decided to cancel most of Joseph II's reforms. Despite the Austrian reestablishment, anti-government pamphleting continued. The Dutch radical Gerrit Paape published his detailed observations on the uprising and observed that a new revolution was needed in which the "happiness and freedom of peoples" were respected. The Liège Revolution was also finally suppressed by Austrian forces in January 1791 and its Prince-Bishop reinstated. French invasion The exiled Vonckists in France embraced the French invasion of the territory as the only way to implement their own objectives, largely forgetting the nationalist dimension of their original ideologies. After the two Belgian revolutions were crushed, a number of Brabant and Liège revolutionaries regrouped in Paris, where they formed the joint Committee of United Belgians and Liégeois (Comité des belges et liégeois unis), which united revolutionaries from both territories for the first time. Three Belgian corps and a Liège Legion were levied to continue the fight for the French against the Austrians. The War of the First Coalition (1792–1797) was the first major effort of multiple European monarchies to defeat Revolutionary France. France declared war on Austria in April 1792, and the Kingdom of Prussia joined the Austrian side a few weeks later. France was attacked by Prussian and Holy Roman forces from