The Great's First Defeat: Kolin 1757: Frederick

Sources for details include Wikipedia , Warfare History Network , and British Battles . If you’re interested, I can provide more info on: The tactic Frederick famously used How he recovered from this loss at the Battle of Rossbach

After a costly victory at the in May 1757, Frederick besieged the city. However, the arrival of a relief army led by the methodical Marshal Daun forced Frederick to divide his forces to intercept the threat. Daun chose a strong defensive position on hills near Kolin , compelling Frederick to attack uphill against superior numbers. The Battle of Kolin: June 18, 1757 Kolin 1757: Frederick the Great's First Defeat

Prussian infantry, harassed by Austrian Grenzers (light infantry), turned to attack the Austrian center too early, resulting in a piecemeal frontal assault instead of the intended flanking maneuver. Sources for details include Wikipedia , Warfare History

Prussia lost the strategic initiative; for much of the remaining war, Frederick was forced to react to the moves of the anti-Prussian coalition rather than dictating the conflict. Daun chose a strong defensive position on hills

Frederick was forced to lift the siege on 20 June and withdraw entirely from Bohemia back into Saxony .