Battle of Pszczyna (Polish: Bitwa Pszczyńska) refers to a series of battles between 1 and 2 September 1939 near the town of Pszczyna during the Invasion of Poland. The battle of Pszczyna formed part of the defensive Battle of the Border. The initial, decisive victory of the Polish forces on September 1, 1939 was followed by the crushing defeat on the next day near Ćwiklice, due to a major tactical error on the part of the Polish military command, resulting in premature withdrawal of the entire Armia Kraków from Upper Silesia.