First Silesian War

First Silesian War
August Heinrich Ferdinand Tegetmeyer · Public domain · source
Date	1740–1742
Place	Silesia, Bohemia, Saxony, Neumark
Result	Treaty of Breslau; Prussian acquisition of most of Silesia
Combatant1	Kingdom of Prussia; Electorate of Brandenburg
Combatant2	Habsburg Monarchy; Kingdom of Hungary; Kingdom of Bohemia; Electorate of Saxony
Commander1	Frederick II of Prussia; Prince Leopold of Anhalt-Dessau; Frederick William von Seydlitz
Commander2	Charles VII; Maria Theresa; Heinrich von Braunschweig; Count Neipperg

First Silesian War

The First Silesian War (1740–1742) was the opening theater of the wider War of the Austrian Succession, pitting the Kingdom of Prussia under Frederick II of Prussia against the Habsburg Monarchy ruled by Maria Theresa. Sparked by dynastic succession and territorial ambition, the conflict transformed relations among Great Britain, France, Russia, Saxony, Spain, and the Dutch Republic while reshaping the map of Central Europe through the acquisition of Silesia by Prussia.

Background and causes

The death of Charles VI, Holy Roman Emperor in 1740 triggered the application of the Pragmatic Sanction of 1713, intended to secure the inheritance of Habsburg lands for Maria Theresa. Claims against the Pragmatic Sanction by states including Bavaria, Saxony, and Spain encouraged opportunism. The young Frederick II of Prussia exploited disputed rights to the Duchy of Jägerndorf and ancient succession claims related to the Piast dynasty in Silesia, using pretexts such as the alleged insult at the coronation of Maria Theresa to justify intervention. The strategic and economic importance of Silesian industries in Breslau and Glogau, as well as its borders with Brandenburg-Prussia and access to the Oder River, made Silesia a coveted prize for Brandenburg-Prussia and a vulnerable asset for the Habsburgs.

Belligerents and commanders

On one side stood Kingdom of Prussia led by Frederick II of Prussia, with marshals and generals such as Leopold I, Prince of Anhalt-Dessau, Frederick William von Seydlitz, and staff officers including members of the Hohenzollern household. Prussia coordinated with advisors tied to the Prussian General Staff and regional commanders from Pomerania and Neumark provinces. Opposing them, the Habsburg Monarchy marshaled forces under Maria Theresa’s ministers and commanders including Heinrich von Brühl (political influence), field commanders like Count Otto Ferdinand von Abensperg und Traun and later imperial contenders such as Charles Albert, Elector of Bavaria who contested the imperial crown. Allies and potential intervening powers included the Electorate of Hanover allied to Great Britain, France supporting anti-Habsburg claimants, and the Russian Empire observing Central European balance.

Course of the war

Prussian forces executed a rapid invasion of Silesia in late 1740 and early 1741, leveraging the mobilization of the Prussian Army and the veteran doctrine of maneuver developed under the Hohenzollerns. Frederick’s swift occupation of fortified towns and crossings along the Oder forced the Habsburgs to scramble troops from Bohemia and Moravia. The conflict expanded as Habsburg attempts to counterattack collided with Prussian interior lines and supply initiatives aided by sieges of border fortresses. Meanwhile, diplomatic maneuvers in Vienna, Paris, Dresden, and London influenced operational tempos, as Maria Theresa sought subsidies and alliances while Prussia pursued consolidation rather than overextension. By mid-1741, simultaneous campaigns in Bohemia and Silesia, as well as movements by Bavarian and Saxon forces, complicated the front and produced episodic engagements culminating in decisive negotiations.

Major battles and sieges

Key engagements included the Siege of Glogau, where Prussian garrison actions affected Habsburg attempts at relief, and the Battle of Mollwitz (1741), a major field action where the disciplined Prussian infantry and cavalry defeated an Austrian army commanded by Count Neipperg and others despite Frederick’s early retreat. The capture of Breslau (Wrocław) by Prussian forces undermined Habsburg control of Upper Silesia and demonstrated the effectiveness of Prussian logistics. Sieges at Neisse and operations around Brieg showcased siegecraft and fortress warfare inherited from campaigns in the War of the Spanish Succession. Skirmishes near Oppeln and maneuvers across the Silesian plain illustrated the interplay of maneuver warfare and fortified positions that characterized the war.

Diplomatic negotiations and treaties

International diplomacy ran parallel to combat. France and Bavaria sought to press Habsburg weakness to claim the Imperial crown for Charles Albert, Elector of Bavaria, while Great Britain and the Dutch Republic were wary of a strengthened Prussia upsetting the balance. Negotiations in Breslau and later at Breslau peace talks brought representatives of Prussia and Austria together, culminating in the Treaty of Breslau (also known as the Treaty of Berlin in some accounts), in which Maria Theresa ceded most of Silesia to Prussia. Concurrent treaties and understandings among Saxony, Bavaria, and France continued to reshape alliances in the wider War of the Austrian Succession.

Consequences and aftermath

The war decisively shifted Central European power: Prussia emerged as a major state with control of Silesia’s industry and resources, while Habsburg Austria suffered a strategic and prestige loss but preserved core hereditary lands and the imperial title for Charles VII temporarily challenged by dynastic politics. The acquisition of Silesia accelerated Prussian economic and military modernization, influencing later episodes such as the Seven Years' War and the rivalry culminating in German unification under the German Empire. The settlement altered alliances, prompting Maria Theresa to reform the Habsburg military and pursue diplomatic realignments with Great Britain and Russia, setting the stage for subsequent Silesian Wars and continued 18th-century European warfare.

Category:Wars involving Prussia Category:Wars involving the Habsburg monarchy Category:1740s in Europe