Polish forces were made of local szlachta (nobility), which had not experienced any major military conflicts, and was unprepared to fight professional Swedish army, which was largely based on mercenaries, veterans of the Thirty Years' War.

Their task was to defend the Noteć river crossings before the arrival of main forces, commanded by King John II Casimir.

For five hours, the chosen infantry defended bridges over the Noteć and the Gwda rivers, retreating after running out of ammunition.

[1] The nobility was granted guarantee of its freedoms (see Golden Liberty), and only Poles were to be nominated to the posts of civil servants.

In early August he camped near Środa Wielkopolska, awaiting the arrival of the army commanded by Charles Gustav.

Furthermore, on August 2 John Casimir expressed his willingness to hand the Polish crown over to Emperor Ferdinand III.

Furthermore, they were later allowed to return to Poland, and to participate in public life (...) It was after Ujście that collaboration and treason emerged as one of possible choices in the so-called "decent families".