Battle of Prague (1757)

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Battle of Prague
Part of the Seven Years' War
Battle of Prague, 6 May 1757 - Attempted envelopment.png
Date 6 May 1757
Location Prague, Bohemia, present-day Czech Republic
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Result Prussian tactical victory, Austrian strategic victory
Kingdom of Prussia Prussia Habsburg Monarchy Austria
Commanders and leaders
King Frederick the Great Charles of Lorraine
Maximilian Ulysses Count Browne
66 infantry battalions
113 cavalry squadrons
82 guns – total 67,000[1]
60 infantry battalions
20 cavalry squadrons
59 guns – total 60,000[1]
Casualties and losses
14,300 killed and wounded[1] 12,000 killed and wounded plus 4,500 captured[1]

In the Battle of Prague or Battle of Štěrboholy on May 6, 1757 Frederick the Great's 67,000 Prussians forced 60,000 Austrians to retreat, but having lost 14,300 men, decided he was not strong enough to attack Prague.


After Frederick had forced the surrender of Saxony in the 1756 campaign, he spent the winter devising new plans for a defence of his small kingdom. It was not in his nature, nor in his military strategy, simply to sit back and defend. He began drawing up plans for another bold stroke against Austria.

In early spring the Prussian army marched in four columns over the mountain passes separating Saxony and Silesia from Bohemia. The four corps would unite at the Bohemian capital of Prague. Though risky, because it exposed the Prussian army to a defeat in detail, the plan succeeded. After Frederick's corps united with a corps under Prince Moritz, and General Bevern joined up with Schwerin, both armies converged near Prague.

Meanwhile, the Austrians had not been idle. Though initially surprised by the early Prussian attack, the able Austrian Field Marshal Maximilian Ulysses Count Browne had been retreating skillfully and concentrating his armed forces towards Prague. Here he established a fortified position to the east of the town, and an additional army under Prince Charles of Lorraine arrived swelling the Austrian numbers to 60,000. The prince now took command.

The Austrian army under von Browne had taken up a near invincible position on the Ziska- and the Tabor mountains. The town was on their left flank, with a steep gorge to the north, and to the west by a marshy slope with a brook at the bottom. The two Austrian commanders were in disagreement about the course of action: von Browne wanted to attack, but Charles decided to wait for Konigseck, who was defeated at the Battle of Reichenberg but was known to be retreating towards Prague, and possibly even for the arrival of Daun.

On the 6th of May, around 5 am, the Prussian army assembled to the north on the Prosek heights, 115,000 men strong, and Frederick sent Keith with 30,000 to the west of the town to cut off any Austrian retreat. The Austrians drew up for battle facing north and east.

The battle

The Battle of Prague in Bohemia, May 6, 1757, English 18th century copper engraving

Frederick ordered an immediate assault, but Schwerin convinced him to make a reconnaissance around the Austrian right flank. He returned with the information that gradually sloping green meadows offered a better chance for attack at the Austrian rear. The Prussian army started marching around 7 am, and succeeded in staying largely out of sight till the Austrian generals noticed the movements around 10 am. Field Marshal von Browne shifted six infantry regiments to take up position to the south east.

Schwerin, accompanied by General Winterfeldt, was finally prepared to attack. The attack was led by the infantry of Winterfeldt. The Prussian infantry soon found themselves not in meadows, but in the remains of fish ponds. While they struggled through, Winterfeldt was hit by a musketball. The Prussian infantry wavered and Schwerin rallied them, leading them from the front. He was hit several times by Austrian canister. Frederick, when he heard the news, ordered the assault to continue.

The Austrian infantry smelled the Prussian confusion and started to press the Prussians back down the slope, opening a gap between themselves and the remainder of the Austrian line still facing north. At this time von Browne was mortally wounded by Prussian infantry fire and carried into Prague.

While King Frederick and General von Zieten reorganised the Prussian infantry in the south for another attack, the generals Hautcharmoy and Bevern spotted the gap in the Austrian line and started to filter infantry into the gap. Austrian Croats had engaged Prussians to the north of the Austrian left flank, but with the gap in the Austrian line being exploited by a steady stream of Prussians he pulled back and formed a new line running south from the west end of the Tabor mountain.

The final phase of the battle started around 3 pm, with Prussians engaging the still-forming Austrian line and outflanking them from the south. Charles withdrew into the town, the retreat being covered by his cavalry.


The Austrians had lost 12,000 men and 4,500 prisoners. Having suffered over 14,000 casualties in his own army, losses hard to replace for the small Prussia, Frederick decided not to assault the city walls of Prague. He calculated that 40,000 soldiers in addition to 75,000 inhabitants would soon consume the city stores.

His calculation, however, did not take into account the relief army Austria managed to field against him at the Battle of Kolin.


  1. 1.0 1.1 1.2 1.3 Perrett, Bryan (1992). The Battle Book. London, England: Arms and Armour Press. ISBN 1-85409-328-2.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles> p. 240.