only a contingent of the Prussian army. At Auerstedt a single French corps defeated the bulk of the Prussian army, despite being heavily outnumbered. Victory at Auerstedt was all but secured once the Duke of Brunswick (as well as fellow commander Friedrich Wilhelm Carl von Schmettau) were mortally wounded, and the Prussian command devolved to the less able King Fredrick Wilhelm who believed he was facing Napoleon himself. Matters worsened once the vanquished remnants of the Prussian army from Jena stumbled onto the clash at Auerstedt, further plunging the Prussians' morale and triggering their precipitous retreat. For this conspicuous victory, Marshal Davout was later created the Duke of Auerstedt by Napoleon. During the battle of Jena-Auerstedt, Marshal Jean-Baptiste Bernadotte had marched from Naumburg to Dornburg and arrived at Apolda late in the day due to the poor state of the roads. Apolda sits on strategically important heights between Auerstedt to the North and Jena to the South, and Napoleon had ordered Bernadotte to move to Dornburg and seize Apolda; upon establishing his artillery on the heights, Bernadotte compelled the Prussians to withdraw from Jena and Auerstedt. Napoleon, believing Bernadotte to be a coward due to his absence in either battle, nearly court-martialed him. On 17 October, Bernadotte mauled Eugene Frederick Henry, Duke of Württemberg's previously untouched Reserve corps at the Battle of Halle and chased it across the Elbe River, this redeeming himself in Napoleon's eyes. Some 160,000 French soldiers fought against Prussia increasing in number as the campaign went on, with reinforcements arriving across the Wesel bridgehead from the peripheral theatre surrounding the recently formed Kingdom of Holland, advancing with such speed that Napoleon was able to destroy as an effective military force the entire quarter of a million-strong Prussian army. The Prussians sustained 65,000 casualties including the deaths of two members of the royal family lost a further 150,000 prisoners, over 4,000 artillery pieces, and over 100,000 muskets stockpiled in Berlin. The French suffered around 15,000 casualties for the whole campaign. Napoleon entered Berlin on 27 October 1806 and visited the tomb of Frederick the Great, telling his marshals to show their respect, saying, "If he were alive we wouldn't be here today". In total, Napoleon and the Grande Armée had taken only 19 days from the commencement of the invasion of Prussia until essentially knocking it out of the war with the capture of Berlin and the