The Battle of Château-Thierry saw the Imperial French army commanded by Emperor Napoleon attempt to destroy a Prussian corps led by Ludwig Yorck von Wartenburg and an Imperial Russian corps under Fabian Wilhelm von Osten-Sacken. The two Allied corps managed to escape across the Marne River, but suffered considerably heavier losses than the pursuing French. This action occurred during the Six Days' Campaign, a series of victories that Napoleon won over Prussian Field Marshal Gebhard Leberecht von Blücher's Army of Silesia. Château-Thierry lies about 75 kilometres (47 mi) northeast of Paris.

The Six Days Campaign was a final series of victories by the forces of Napoleon I of France as the Sixth Coalition closed in on Paris.