After the Southern Netherlands was annexed by France, the French revolutionaries began to implement their policies regarding the Catholic Church. The Civil Constitution of the Clergy required that priests take an oath of allegiance to the state. Priests who refused such an oath were considered to be enemies of the state and could be removed from their positions and homes. Additionally, in early 1798, the French Council of Five Hundred passed a law requiring compulsory military service. This law ordered the conscription of men between the ages of 20 and 25 in all French territories. General conscription like this was a relatively new product of the French Revolution, and was met with anger by the men who were forced into service.
By region
Flanders
The majority of the conflict during the Peasants' War occurred in Flanders and Brabant. Referred to as the Boerenkrijg, it is referenced by some historians as a Belgian national revolt, and an indication of a desire for independence by Belgium. In Flanders the revolt was somewhat organized, with the people seeking aid from foreign nations such as England and Prussia. The revolution began on 12 October 1798, with peasants taking up arms against the French in Overmere. Initially the rebellion was somewhat successful, however, lacking proper arms and training it was crushed less than two months later, on 5 December, in Hasselt. An estimated 5,000–10,000 people were killed during the uprising. Additionally, there were 170 executions of the leaders of the rebellion.
Luxembourg
In Luxembourg, the revolt was called Klëppelkrich. This revolt quickly spread, consuming most of West Eifel. The primary combatants in Luxembourg were the peasantry. The middle and upper classes were not driven to revolt as the anti-clericalism and the modernisation brought by the French Revolution were somewhat beneficial to them. Lacking both financial support from the middle classes, and proper military training, the peasants were quickly put down by the French occupation force. Ninety-four insurgents were tried and of those, 42 were executed.
Episodes of the war were depicted by the 19th century Belgian artist and sculptor Constantin Meunier. The war has been romanticized in some cases as a proper Belgian revolution, as it was a major uprising fighting for independence from external rule.
