The Battle of Rossbach took place on December 5, 1757, during the Seven Years' War. It was fought between the forces of Frederick the Great of Prussia and a combined army of France and the Holy Roman Empire. Frederick's innovative tactics and superior maneuvering led to a decisive victory for the Prussians, despite being outnumbered. This battle is notable for its demonstration of the effectiveness of rapid troop movements and the use of terrain. The victory at Rossbach significantly boosted Prussian morale and solidified Frederick's reputation as a brilliant military leader during the war.