After defeating the Prussian army in the autumn of 1806, Emperor Napoleon entered partitioned Poland to confront the Russian army, which had been preparing to support the Prussians until their sudden defeat. Crossing the River Vistula, the French advance corps took Warsaw on 28 November 1806.

The Battle of Pułtusk took place on 26 December 1806 during the War of the Fourth Coalition near Pułtusk, Poland. Despite their strong numerical superiority and artillery, the Russians suffered the French attacks, before retiring the next day having suffered greater losses than the French, disorganizing their army for the rest of the Year.