The Bohemian campaign of 1744 (14 August 1744 – January 1745) was fought between the Prussian army commanded by King Frederick II and the Habsburg Austrian army led by Prince Charles Alexander of Lorraine. The Austrians were assisted by a corps from the Electorate of Saxony. In August 1744, the Prussian army invaded the Habsburg territory of Bohemia. Frederick planned to seize part or all of Bohemia while Austria's main army under Prince Charles Alexander of Lorraine was far away in Alsace. The Prussian army concluded the Siege of Prague in September and quickly occupied the eastern half of Bohemia.
Prince Charles' army evacuated Alsace and marched rapidly across southern Germany. It joined Károly József Batthyány's Bohemian army and a Saxon corps. Assisted by Otto Ferdinand von Abensperg und Traun, Prince Charles outmaneuvered Frederick, steadily compelling him to withdraw from territory that the Prussians occupied. The Austrian Pandurs and hussars constantly harassed the Prussians, capturing messengers and wiping out foraging detachments. The Austrians first pushed Frederick behind the Elbe River then they forced their way across the river in mid-November. Frederick was compelled to abandon Prague and evacuate Bohemia. The Prussian army's logistical support and discipline broke down during the retreat and 10,000 to 30,000 men were lost to desertion, capture, or death.
Background The First Silesian War, part of the War of the Austrian Succession, ended on 28 July 1742 when King Frederick II of Prussia and Queen Maria Theresa of the Habsburg monarchy signed the Treaty of Breslau. By this agreement, Austria formally recognized Prussia's capture of Lower and Upper Silesia and the County of Kladsko (Glatz). Frederick's abandonment of his allies stunned Europe's leaders because it left Austria free to deal with its remaining enemies. Frederick increased Prussia's population from 2.2 million to 3.2 million but other nations realized that Frederick was not trustworthy.
During the two years of peace, King Frederick II increased his army's strength to 94,500 infantry and 29,200 cavalry. In January 1744, Frederick covertly made preparations to re-enter the war against Austria by gaining the cooperation of the Electorate of Bavaria, Electoral Palatinate and Landgraviate of Hesse-Kassel. He also reopened secret talks with France that resulted in the Treaty of Paris, which was signed on 5 June 1744. Frederick was afraid that if Austria won the war, the Habsburgs would try to reconquer Silesia. As part of the Treaty of Paris, Frederick promised to invade Bohemia with 80,000 troops in August. France would mount an offensive against the Austrian Netherlands while stationing an army in Alsace. France pledged to pursue any Austrian forces moving to defend Bohemia. Frederick agreed to hand over some of conquered Bohemia to Charles VII, Holy Roman Emperor while acquiring choice territories for Prussia.
In the winter of 1743, Maria Theresa determined to invade French possessions along the Rhine River. Though the province of Alsace was part of France, most Alsatians still spoke German, so seizing this area became her goal. Her husband Francis Stephen was from nearby Lorraine which, by treaty, would become part of France when the former King of Poland Stanisław Leszczyński died. Some of Maria Theresa's councilors advised her that invading Alsace was unwise while Frederick's intentions were unknown but she wrote to one of her generals, "Do not let yourself be troubled by the King of Prussia; do not think of him".
Prelude
The French Army of Flanders invaded the Austrian Netherlands on 17 May 1744. The Barrier Treaty called for Dutch soldiers to garrison the fortresses in the Austrian Netherlands, despite the fact that France and the Dutch Republic were officially at peace. In June, the French army forced the Dutch garrisons to surrender at Menin, Ypres and Fort Knokke. The garrison of Veurne (Furnes) capitulated on 11 July. Field Marshal Prince Charles Alexander of Lorraine outmaneuvered Marshal François de Franquetot de Coigny and put 60,000 Austrian soldiers across the Rhine on 2 July 1744. The Battle of Wissembourg was fought on 5 July.
The French government responded to the threat by sending an army of 32,000 men under Marshal Adrien Maurice de Noailles, 3rd Duke of Noailles marching toward Alsace. The campaign in Flanders was suspended and Maurice de Saxe was left with 55,000 men. On 12 July 1744, King Frederick II received news that Prince Charles was in Alsace. The Austrian government belatedly realized Frederick's intentions. On 5 August, Vienna warned its local army commander General of the Cavalry Károly József Batthyány that Prussia was ready to attack. Three days later, Prince Charles received the same message plus instructions to start sending his army east to fight the Prussians. On 14 August, 80,000 Prussians began crossing the border into Bohemia.
Invasion
The Prussian invasion ignited what is known as the Second Silesian War. King Frederick commanded the main 40,000-man army that entered Bohemia from the north. Field Marshal Leopold II, Prince of Anhalt-Dessau (Young Dessauer) led a 16,000-strong Prussian column into Bohemia from the northeast and 16,000 Prussians under Field Marshal Kurt Christoph Graf von Schwerin entered Bohemia farther east.
Frederick's and Prince Leopold's forces violated the territory of the Electorate of Saxony while Schwerin's column started from Kłodzko (Glatz). Frederick's army entered Bohemia by the Elbe valley and marched via Teplice (Toplitz) and Lovosice (Lobositz). Leopold's column started at Bautzen (Budyšin) and met with Frederick's army at Litoměřice (Leitmeritz). Schwerin's column entered Bohemia at Broumov (Braunau) and marched east. A 20,000-man army was placed east of Kłodzko as a threat to Moravia and the fortress of Olomouc (Olmutz). The Moravian army was directed by Lieutenant General (Lt Gen) Heinrich Karl von der Marwitz.
In August 1744, Batthyány's army of 21,000 Austrians was posted in the Upper Palatinate. Batthyány marched east into Bohemia with 12,000 soldiers and established his force at Beroun (Beraun) southwest of Prague. Frederick's main army was accompanied on the Elbe by 480 boats carrying his heavy artillery and supplies. The Prussians converged on Prague, with Schwerin's column arriving near the city on 31 August 1744 and the main Prussian army reaching it on 1 September. Frederick ordered General Hans Christoph Friedrich Graf von Hacke and 6,000 men to Beroun. On 5 September, there was a minor battle at Beroun in which the Prussians fought their way out with the help of a relief column. After this clash, Batthyány based his army farther southwest at Plzeň (Pilsen)
Reed Browning asserted that 80,000 Prussians invaded Bohemia. Browning's three invading columns totaled 72,000. Gaston Bodart claimed that Prague was besieged by 80,000 Prussians. David G. Chandler stated that the three main Prussian invading columns counted 71,843 men, 182 field artillery pieces and 56 siege guns. During the campaign, the Austrians would employ 108,563 soldiers supported by 197 field guns.
Prussian offensive
According to Bodart, Frederick's 80,000 Prussians concluded the Siege of Prague between 6 and 16 September 1744. The city was defended by 14,900 Austrians, including 4,400 regulars and 10,500 militia. Austrian losses numbered 1,400 killed and wounded, plus 13,500 men, 116 guns, and 14 mortars captured. Prussian casualties were only 150 killed and wounded but included Frederick's cousin Margrave Friedrich Wilhelm of Brandenburg-Schwedt killed. Browning stated that Prague's garrison numbered 17,000 men. The Prussians imposed a ransom of 200,000 pounds sterling on the city.
Starting on 17 September, the Prussian army began moving south from Prague on the east bank of the Vltava (Moldau) River. Lt Gen Gottfried Emanuel von Einsiedel was left in Prague with 5,000 Prussians and the siege artillery. Lt Gen Ernst Christoph von Nassau was sent ahead with the advance guard. The remainder of the Prussian army moved in two columns with the Young Dessauer leading the western column nearest the river while Schwerin's eastern column, usually accompanied by Frederick, followed the main road from Prague to Tábor. Schwerin's column reached the Sázava River on 21 September, Bystřice (Bistritz) on 22 September, Miličín (Miltschin) on 26 September and Tábor on 27 September. At Tábor the two main Prussian columns rendezvoused and the army rested for two days.
The Prussian supply wagons encountered difficulty and only half the supplies arrived at Tábor. Another problem occurred when Batthyány unleashed his Pandurs (Croats) and hussars. These light troops constantly harassed the Prussians, attacking foraging detachments and capturing messengers. Whenever the Pandurs were met with force, they fled out of range but soon returned to annoy the Prussians. On 2 October, the Prussians occupied Hluboká nad Vltavou (Frauenberg). Nassau and the advance guard captured České Budějovice (Budweis) and Frederick faced a dilemma. Schwerin wanted to seize Jindřichův Hradec (Neuhaus) to the southeast, threatening Vienna, while the Young Dessauer wanted to make the main thrust south to České Budějovice to threaten Linz. Frederick opted to move the main army to České Budějovice while also occupying Jindřichův Hradec with a smaller force.
Austrian counteroffensive
On 23 August 1744, the army of Prince Charles recrossed the Rhine, unmolested by the French, because King Louis XV fell ill with smallpox. Prince Charles marched across southern Germany with remarkable speed. Instead of marching in pursuit, the French army began the Siege of Fribourg in the Breisgau. The garrison of Fribourg resisted until 25 November. The French assigned Lt Gen Friedrich Heinrich von Seckendorff and an army of Bavarians, Palatines and Hessians to follow Prince Charles. Seckendorff mounted a leisurely pursuit and then turned aside to liberate Bavaria after it was abandoned by Feldmarschall-Leutnant (FML) Johann Leopold Bärnklau and its Austrian occupying force. On 22 October, Seckendorff recaptured Munich. On 26 September, Prince Charles reached Waldmünchen on the Bohemian border. On 2 October, Prince Charles merged his army with Batthyány's, making a combined army of 55,000. During the campaign, Prince Charles was ably assisted by Field Marshal Otto Ferdinand von Abensperg und Traun who plotted the Austrian strategy to evict the Prussians from Bohemia.
Several events coincided to assist Austria's cause. Saxony, formerly allied with Prussia, switched sides and offered Austria a corps of 20,000 soldiers. On 11 August 1744, the Kingdom of Great Britain paid 150,000 pounds sterling to Austria to enlist 20,000 additional soldiers. Maria Theresa went to Bratislava and extracted a promise of 25,000 troops from the Kingdom of Hungary. The Bohemian nobles and peasants, apathetic during the 1742 invasion, resisted the Prussians. Lt Gen Johann Adolf II, Duke of Saxe-Weissenfels led 20,000 Saxons into Bohemia via Cheb (Eger).