
Known for his bravery and tactical genius, Frederick the Great of Prussia led his nation through multiple wars with Austria and its allies. In 1740, he invaded Silesia, a vulnerable part of the Habsburg Empire, which provided substantial economic and strategic benefits. This invasion sparked the First Silesian War (1740-1742) and the War of the Austrian Succession, which involved complex alliances and shifting allegiances between European powers. Frederick's motivations included territorial expansion, preventing Austrian dominance in German affairs, and countering Austrian attempts to retake Silesia.
| Characteristics | Values |
|---|---|
| Reason for invading Austria | To exploit Austria's momentary weakness and occupy a militarily and politically vulnerable part of the Habsburg empire |
| Year of invasion | 1740 |
| Territory gained | Silesia |
| Result | The invasion added one of the most densely industrialised German regions to Frederick's kingdom, nearly doubling Prussia's population and increasing its territory by a third |
| Other reasons for invasion | To prevent Augustus III, King of Poland and Elector of Saxony, from seeking to connect his own disparate lands through Silesia |
| Other reasons for invading Silesia | To prevent Francis, Maria Theresa's husband, from becoming Holy Roman Emperor in place of Charles VII |
| Battles | Battle of Hohenfriedberg, Battle of Soor, Battle of Torgau, Battle of Liegnitz |
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What You'll Learn
- Frederick II's invasion of Austria was part of the War of Austrian Succession
- He invaded to occupy and benefit from the resources of Silesia
- He exploited Austria's weakness after the death of Holy Roman Emperor Charles VII
- He was in an alliance with France against Austria, who was allied with Britain
- He sought to prevent Austrian dominance in German affairs

Frederick II's invasion of Austria was part of the War of Austrian Succession
Frederick II, also known as Frederick the Great, invaded Austria as part of the War of Austrian Succession. The War of Austrian Succession was a conflict that arose due to the friction between Great Britain and France, which had been ongoing since 1713. During this time, Britain was technically at peace with France, but the two powers still experienced tension in the Americas and India.
Frederick's invasion of Austria was motivated by his desire to expand his kingdom and his fear of Maria Theresa's husband, Francis, becoming the Holy Roman Emperor. He also disliked the shift of August III of Saxony and Poland back to the Austrian side. To counter this, he decided to side with the French against Austria. In June 1744, Frederick and the French agreed that the former would attack Austria from the direction of Vienna, while the latter would attack along the Danube River and check Hanover. Frederick carefully planned his advance toward Vienna, increasing his military strength to 140,000 men. In August, he led 80,000 troops across the frontier into Bohemia, making Prague his first major target.
The invasion of Austria was part of Frederick's broader strategy to expand and consolidate Prussian lands. By invading and occupying Silesia, a vulnerable part of the Habsburg Empire, Frederick not only gained substantial economic and strategic benefits but also nearly doubled Prussia's population and increased its territory by a third. This move prevented Augustus III, King of Poland and Elector of Saxony, from connecting his lands through Silesia.
The conflict between Frederick and the Austrians continued over the years, with battles in Hohenfriedberg, Soor, and Dresden. In 1756, Frederick initiated the Seven Years' War by invading Saxony, which was neutral at the time. Despite facing criticism for this move, he gained significant military, financial, and industrial assets that strengthened Prussia's position. The Seven Years' War ended in 1763, and Frederick resumed his domestic programs, reorganizing the Prussian government.
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He invaded to occupy and benefit from the resources of Silesia
Frederick II of Prussia, also known as Frederick the Great, invaded Austria to occupy and benefit from the resources of Silesia. In 1740, Frederick invaded and quickly occupied almost all of Silesia within seven weeks. This invasion was part of the War of the Austrian Succession and was specifically targeted at this region due to its military and political vulnerability within the Habsburg Empire. By invading Silesia, Frederick added one of the most densely industrialised German regions to his kingdom, nearly doubling Prussia's population and increasing its territory by a third. The occupation also gave Prussia control over the navigable Oder River and prevented Augustus III, King of Poland and Elector of Saxony, from connecting his disparate lands through Silesia.
The invasion of Silesia was justified by Frederick on dynastic grounds, but the economic and strategic benefits were substantial. The resources and industrial capacity of Silesia contributed to Prussia's rise as a European power. Frederick's domestic policies and military campaigns transformed Prussia into a formidable force, challenging the dominance of Austria in German affairs.
The struggle for Silesia continued beyond the initial invasion, with Austria attempting to retake the region. In 1745, the Austrians, reinforced by the Saxons, crossed the mountains to invade Silesia, but Frederick decisively defeated them at the Battle of Hohenfriedberg. This victory was followed by another Prussian success at the Battle of Soor, demonstrating Frederick's tactical genius and determination to retain control of Silesia.
The conflict over Silesia persisted, and in 1760, the Austrians made another attempt to retake the region. Frederick again defeated them at the Battle of Liegnitz, showcasing his commitment to occupying and benefiting from the resources of Silesia. The struggle for Silesia was part of a broader diplomatic context, with shifting alliances between Prussia, Austria, France, Britain, and other powers. These alliances influenced the strategies employed by Frederick and shaped the broader European landscape during this period.
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He exploited Austria's weakness after the death of Holy Roman Emperor Charles VII
Frederick the Great, also known as Frederick II, ruled Prussia from 1740 until his death in 1786. During his rule, he led Prussia through multiple wars with Austria and its allies, expanding and consolidating Prussian lands.
In 1740, Frederick II invaded the Austrian province of Silesia, triggering the eight-year War of Austrian Succession. He exploited Austria's weakness after the death of Holy Roman Emperor Charles VII of Bavaria, who died in January 1745. With Bavaria out of the war, the Austrians were able to focus solely on Frederick's army and invaded Silesia. In response, Frederick renewed his alliance with France and preemptively invaded Bohemia in August 1744, beginning the Second Silesian War.
Frederick's interests shifted from learning, art, and culture to territorial expansion. He was determined to prevent Austrian dominance in German affairs and was known for his bravery and tactical genius. By 1743, the Austrians had subdued Bavaria and driven the French out of Bohemia. Frederick suspected that Maria Theresa, his longtime rival, would attempt to recover Silesia. To strengthen his position, he formed an alliance with France, and in 1756, he invaded Saxony, triggering the Seven Years' War.
In the spring of 1757, Frederick again invaded Bohemia and was victorious against the Austrian army at the Battle of Prague. However, his losses were significant, and he was forced to abandon his invasion. Despite facing great costs and a dwindling army, Frederick continued to pursue daring military tactics and victories.
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He was in an alliance with France against Austria, who was allied with Britain
Frederick II of Prussia, also known as Frederick the Great, invaded Austria multiple times during his reign from 1740 to 1786. One of the reasons for these invasions was the complex network of shifting alliances between European powers at the time, with Prussia and Austria vying for dominance. One of these alliances was the one between Prussia and France against Austria, who was allied with Britain.
In the mid-1720s, there was an attempt to arrange a marriage between Frederick and Amelia, the daughter of King George II of Britain. This potential alliance between Prussia and Britain caused concern for Austria. As a result, the Austrian ambassador in Berlin bribed Prussian officials to prevent it. Despite this, Britain and Prussia maintained cordial relations, and in 1743, they signed a defensive treaty as part of Britain's efforts to build a large alliance against Spain and France.
In the lead-up to the Seven Years' War, Prussia found itself in an alliance with Britain, while Austria was allied with France and Russia. This realignment of alliances was known as the Diplomatic Revolution of 1756. Frederick, who had built a substantial army during peacetime, initiated the war by invading Saxony, which was allied with Austria at the time. This invasion drew widespread criticism, but it put Prussia in a powerful position.
Earlier, in 1744, Frederick had renewed his alliance with France and invaded Austria, marching directly on Prague. This invasion was partly motivated by France's desire for Austria to withdraw its troops from Italy. The French agreed to attack Austria along the Danube River and check Hanover, while Frederick agreed to attack towards Vienna. This invasion caused outrage in Austria and prompted Britain, which was still technically at peace with France since 1713, to pledge more support to Austria.
In summary, the complex and shifting alliances of 18th-century Europe contributed to Frederick II's invasions of Austria. Prussia and France found themselves allied against Austria, who was allied with Britain at various times. These alliances influenced Frederick's strategic decisions, such as the invasions of Saxony and the march on Prague, and shaped the broader context of the Seven Years' War and other conflicts of the era.
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He sought to prevent Austrian dominance in German affairs
Frederick II of Prussia, also known as Frederick the Great, invaded Austria multiple times during his reign (1740-1786). One of the reasons for these invasions was Frederick's desire to prevent Austrian dominance in German affairs.
Frederick's reign was marked by his interest in territorial expansion and his daring military tactics, which led to the expansion and consolidation of Prussian lands. Prussia rose from a third-rank state to one of Europe's five 'great powers' during his lifetime. In 1740, he invaded and quickly occupied almost all of Silesia within seven weeks, a region that was part of the vulnerable Habsburg Empire. This invasion provided Prussia with substantial long-term economic and strategic benefits, nearly doubling its population and increasing its territory by a third. It also gave Prussia control of the navigable Oder River and prevented Augustus III, King of Poland and Elector of Saxony, from connecting his lands through Silesia.
In 1744, Frederick renewed his alliance with France and invaded Austria again, marching directly on Prague. He won several battles against the Austrians, including the Battle of Hohenfriedberg, where his Prussian army was greatly outnumbered, and the Battle of Soor. In 1756, he initiated what became known as the Seven Years' War by invading Saxony, which was at the time neutral. This conquest was quick but drew widespread criticism.
Frederick's rival, Archduchess Maria Theresa of Austria, also sought to expand her influence. She was determined to prevent Prussian dominance in German affairs and wanted to restore Habsburg influence and stabilize the Empire. This often brought her into conflict with Frederick, who worked to counter her efforts. For example, he used his influence as one of the Empire's electoral princes to frustrate British plans to promote the Archduke Joseph as King of the Romans or emperor-elect.
In the late 1750s, Frederick's attention turned to Bohemia, where he met the Austrian forces near the town of Chotusice. The Prussians claimed victory, and the Austrians were forced to accept a treaty that resulted in significant territorial losses. However, the terms of this treaty were quickly broken due to Austrian successes against the French.
In 1760, the Austrians again attempted to retake Silesia, but Frederick defeated them at the Battle of Liegnitz. Despite this victory, he could not prevent Austrian and Russian troops from raiding Berlin in October. By 1761, both the Austrian and Prussian military forces were exhausted, and no major battles were fought between them.
Throughout his reign, Frederick sought to prevent Austrian dominance in German affairs and worked to expand Prussian influence and territory. He achieved this through multiple invasions of Austria and its allies, taking advantage of moments of weakness and forming strategic alliances with other powers, such as France and Britain.
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Frequently asked questions
Frederick II, also known as Frederick the Great, invaded Austria to expand Prussia's territory and improve its international standing. He was a brave and ambitious leader with a reputation for tactical genius.
Frederick II's invasion of Austria had significant consequences. It led to the First Silesian War (1740-1742), which was part of the War of the Austrian Succession. The occupation of Silesia added a densely industrialised region to Frederick's kingdom, nearly doubling Prussia's population and increasing its territory by a third. It also prevented the King of Poland and Elector of Saxony, Augustus III, from connecting his lands through Silesia.
The invasion triggered a reshuffling of Europe's longstanding alliances in what became known as the Diplomatic Revolution of 1756. Prussia sided with Great Britain, while Austria formed an alliance with France and Russia. This "reversal of alliances" shattered the Old System and led to the Seven Years' War, which ended in 1763.























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