
The French Revolutionary Wars, which lasted from 1792 until 1802, were a series of military conflicts resulting from the French Revolution. On April 20, 1792, the French Legislative Assembly declared war on Austria, marking the beginning of the War of the First Coalition. This decision was influenced by various factors, including threats from foreign monarchs, the desire to spread the revolution throughout Europe, and the king's ambition to increase his popularity. The war was initially a disaster for the French, with tensions between King Louis XVI and the Legislative Assembly intensifying. The outcome of this conflict had significant repercussions, including the abolition of the monarchy and the rise of the Jacobins.
| Characteristics | Values |
|---|---|
| Date | 20 April 1792 |
| Assembly | Legislative Assembly |
| War | War of the First Coalition |
| Reason | Austria refused to recall its troops from the French border |
| Reason | Austria was perceived to be threatening the use of force |
| Reason | The French felt threatened by foreign monarchs |
| Reason | The Girondins wanted to spread the revolution throughout Europe |
| Reason | King Louis XVI wanted to change the dynamics of the French revolution in his favour |
| Outcome | Austria and Prussia responded with a coordinated invasion |
| Outcome | The invasion was turned back at the Battle of Valmy in September 1792 |
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What You'll Learn

The French Legislative Assembly declared war on 20 April 1792
The French Legislative Assembly declared war on Austria on 20 April 1792, marking the beginning of the French Revolutionary Wars. This conflict, which lasted from 1792 until 1802, pitted the French First Republic against various monarchies, including Austria, Prussia, and Great Britain. The war's first period was known as the War of the First Coalition (1792-1797), followed by the War of the Second Coalition (1798-1802).
In the lead-up to the war declaration, France was in a state of political upheaval due to the French Revolution, which had begun in 1789. The revolution radicalised, challenging old institutions and targeting defenders of the Ancien Régime, some of whom emigrated from France to avoid persecution. King Louis XVI himself attempted to flee in June 1791 but was captured and placed under surveillance. He was suspected of conspiring with other European monarchs, including King Frederick William II of Prussia and Emperor Francis II of Austria, Hungary, and Bohemia. This suspicion was confirmed by the Declaration of Pillnitz in August 1791, where these monarchs expressed their support for Louis XVI and threatened consequences if anything befell him. The National Assembly interpreted this declaration as a serious threat and a potential declaration of war.
Additionally, France faced the threat of conservative royalist Armées des Émigrés forming just across its borders, ready to invade and end the Revolution with the help of other monarchies. The Girondin majority in the Legislative Assembly favoured war, especially with Austria, to demonstrate the Revolution's strength and defend its achievements. They also wanted to spread the Revolution throughout Europe. The Assembly declared the 'nation in danger' as they observed the enemy coalition gathering at its borders.
On 20 April 1792, the French Legislative Assembly, feeling threatened by foreign monarchs and aiming to spread the Revolution, voted for war against Francis II of Austria. This decision was influenced by foreign minister Charles François Dumouriez, who presented a long list of grievances against Austria. Despite initial military setbacks, France achieved significant victories, such as the Treaty of Campo Formio, which ended the First Coalition War. The war declaration on 20 April 1792 marked a pivotal moment in the French Revolutionary Wars and set the stage for the subsequent conflict and political developments in France.
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The French Revolution radicalised from 1789 to 1792
The French Revolution, which lasted from 1789 to 1799, was a pivotal period of radical social, political, and economic transformation in France. From 1789 to 1792, the revolution underwent a process of gradual radicalisation, marked by a break with longstanding institutions and practices, and a targeted effort to dismantle the Ancien Régime.
The revolution was catalysed by a convergence of social, political, and economic factors, which the Ancien Régime proved incapable of managing effectively. This period witnessed the rise of a prosperous elite of wealthy commoners, known as the bourgeoisie, who aspired to political power. The peasants, many of whom owned land, sought to eradicate the remnants of feudalism to attain full rights as landowners and expand their holdings. Additionally, the population of Europe had doubled between 1715 and 1800, leading to increased demand for food and consumer goods, and a general rise in prices. These factors contributed to widespread social distress, prompting the convocation of the Estates General in May 1789, its first meeting since 1614. The Third Estate broke away and reconstituted as the National Assembly in June, marking the beginning of a struggle for political control.
During this period, pamphlets played a significant role in shaping public discourse and addressing the desired reconstruction of the state. Notable works include Richard Price's "A Discourse on the Love of Our Country," which supported the French Revolution, and Edmund Burke's "Reflections on the Revolution in France," which criticised it as a threat to the aristocracy. The American Revolution and European revolts of the 1780s further influenced public debates on patriotism, liberty, equality, and democracy.
In 1791, King Louis XVI's attempted escape with his family to Varennes was thwarted, further discrediting the monarchy. The king was put under surveillance and suspected of conspiring with other European monarchs to restore pre-revolutionary authority. This suspicion was confirmed by the Declaration of Pillnitz in August 1791, where King Frederick William II of Prussia and Emperor Francis II of Austria, Hungary, and Bohemia called on European monarchs to "liberate" France from the revolution. The National Assembly responded by declaring war on Austria on April 20, 1792, marking the beginning of the French Revolutionary Wars and the War of the First Coalition.
In summary, from 1789 to 1792, the French Revolution underwent a process of radicalisation, characterised by social and political upheaval, ideological battles, and external threats. The revolution's impact extended beyond France's borders, challenging power structures and inspiring similar movements across Europe.
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The Declaration of Pillnitz threatened the French Revolution
The French Revolutionary Wars, which lasted from 1792 until 1802, were a series of military conflicts resulting from the French Revolution. The war, which was declared by the French Legislative Assembly, was announced against Austria and Prussia in the spring of 1792. This launched the War of the First Coalition.
The Declaration of Pillnitz, issued on 27 August 1791, was a joint statement by Holy Roman Emperor Leopold II and King Frederick William II of Prussia. It urged European powers to unite and restore the monarchy in France, as French King Louis XVI had been reduced to a constitutional monarch during the French Revolution. The declaration was made at Pillnitz Castle near Dresden, Saxony (now in Germany). The declaration stated that they viewed the situation of the King of France as a subject of common interest for all of Europe's sovereigns. They called on these powers to use efficient means to place the King of France in a position to freely consolidate the bases of a monarchical government.
The French government interpreted the declaration as a threat to its sovereignty and a provocation. The National Assembly of France saw it as a sign that Austria and Prussia were threatening the revolution, which radicalised the French revolutionaries and increased tensions. The declaration was also seen as a serious threat by the revolutionary leaders and was denounced. The French issued an ultimatum demanding that Leopold renounce any hostile alliances and withdraw his troops from the French border. The reply was evasive, and this led to the French Legislative Assembly voting for war on 20 April 1792.
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The Girondins wanted to spread the Revolution throughout Europe
On 20 April 1792, the French Legislative Assembly declared war on Austria, marking the beginning of the French Revolutionary Wars. This war declaration was influenced by the following factors:
- Feeling threatened by foreign monarchs, particularly Leopold II (brother of Marie Antoinette), who were threatening to interfere on behalf of King Louis XVI.
- The Girondins, a powerful political faction within the Legislative Assembly, wanted to spread the Revolution throughout Europe and defend its achievements. They believed that war was a way to unite the people behind the Revolution and showcase its strength.
- King Louis XVI also wanted the war, hoping to change the dynamics of the French Revolution in his favour and increase his popularity.
- There was a risk of France being overwhelmed by foreign forces, particularly from Prussia and Austria, who were forming armies near the French border.
Now, focusing on the Girondins and their desire to spread the Revolution:
The Girondins, also known as Girondists, were a group of loosely affiliated republican politicians and revolutionaries who played a significant role in the French Revolution. They were influenced by classical liberalism and the concepts of freedom, liberty, equality, and democracy. The Girondins first emerged as critics of the court and the monarchy, and they gradually expanded their influence to control the National Assembly, the Legislative Assembly, and later the National Convention. They were led by figures such as Jacques Pierre Brissot, Pierre Victurnien Vergniaud, Marguerite-Élie Guadet, and Armand Gensonné.
First, they believed that war would unite the people behind the Revolution and showcase its strength. They wanted to defend the achievements of the Revolution, such as the Declaration of the Rights of Man and of the Citizen of 1789 and the early beginnings of parliamentary democracy. They also wanted to prevent a return to an absolutist regime, as stated in the Declaration of Pillnitz by King Frederick William II of Prussia and Emperor Francis II of Austria.
Second, the Girondins had ambitious military plans to spread the Revolution internationally. Brissot, their leader, proposed a strategy to dominate Europe by conquering the Rhineland, Poland, and the Netherlands. They aimed to create a protective ring of satellite republics in Great Britain, Spain, and Italy by 1795. War, to them, was a means to realise this expansionist strategy.
Third, the Girondins wanted to spread the Revolution to liberate oppressed peoples from despotism and to test the loyalty of King Louis XVI. They saw themselves as defenders of freedom and democracy, and they believed that exporting the Revolution was a way to promote these ideals throughout Europe.
Finally, the Girondins' desire to spread the Revolution was influenced by refugees from recently failed revolutions in nearby countries, such as Dutch Patriots and Belgian-Liégois rebels. These refugees urged their French comrades to 'liberate' the Low Countries, which were under Austrian rule.
In summary, the Girondins wanted to spread the Revolution throughout Europe as a way to defend its achievements, unite the people, expand their influence, and promote their ideals of freedom and democracy. Their desire for war and their ambitious military plans ultimately contributed to the declaration of war on Austria in April 1792, marking the beginning of the French Revolutionary Wars.
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The French army performed poorly in the first engagements
On 20 April 1792, the French Legislative Assembly declared war on Austria, marking the beginning of the French Revolutionary Wars. This war was driven by the French king, many of the Feuillants, and the Girondins, who wanted to spread the revolution throughout Europe and defend it within France. The revolution had disorganized the army, and the forces raised were insufficient for the invasion. The French army's poor performance in the first engagements can be attributed to several factors:
Firstly, at the Battle of Marquain near Tournai on 29 April, French soldiers fled at almost the first sight of the Austrian outposts. They also murdered their general, Théobald Dillon, whom they accused of treason. This indicates a lack of discipline and cohesion within the French ranks. The French forces were also disorganized and insufficiently prepared for the invasion, which likely contributed to their poor performance.
Secondly, general Biron suffered a defeat at Quiévrain near Mons. The Dunkirk column marched 15 miles to Veurne on 30 April but encountered no enemy and retreated back to Dunkirk. These setbacks suggest that the French army struggled to coordinate their military strategies effectively.
Thirdly, when both his subordinates, Dillon and Biron, failed in their missions, Rochambeau resigned. Lafayette, upon hearing of the defeats and Rochambeau's resignation, cancelled his assault on Namur and Liège, awaiting new orders from Paris. The French army's leadership was in disarray, with resignations and cancelled assaults further hindering their military efforts.
Finally, the French army was up against a formidable coalition of foreign forces. On the Rhine, a combined army of Prussians, Austrians, Hessians, and French émigrés under the Duke of Brunswick was formed to invade France. They were flanked by two smaller armies, all under the command of King Frederick William II of Prussia. The French army faced a well-organized and coordinated enemy, which likely contributed to their poor performance in the first engagements.
In conclusion, the French army's poor performance in the first engagements of the French Revolutionary Wars was characterized by disorganization, lack of discipline, leadership issues, and the strength of the opposing coalition forces. These initial setbacks, however, did not prevent the French from achieving significant victories later in the conflict.
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Frequently asked questions
The National Assembly declared war on Austria on 20 April 1792.
The National Assembly declared war on Austria due to the following reasons:
- They felt threatened by foreign monarchs who were interfering on behalf of King Louis XVI.
- The Girondins wanted to spread the revolution throughout Europe.
- King Louis XVI also wanted the war, hoping to change the dynamics of the French revolution in his favour.
The war started as a disaster for the French. However, in 1794, the situation improved dramatically for the French as they achieved huge victories at Fleurus against the Austrians and Dutch and at the Black Mountain against the Spanish.
The victory against Austria and its allies emboldened the National Convention to abolish the monarchy. The war also led to the rise of the Jacobins, who imposed the Reign of Terror to unify the nation.

































