Baltic coast 4–10 September Northern Front Southern Front The Battle of Mikołów (Polish: Bitwa pod Mikolowem, Bitwa wyrska) refers to the border engagement on September 1 and 2, 1939, that took place in the area of the town of Mikołów, located in the Silesian Voivodeship, during the early stages of the Invasion of Poland in the Second World War.

The battle began with attacks by aircraft of the German 4th Air Fleet (Luftflotte), which bombed several areas, including the airfield in Katowice.

The invaders were helped by members of the German minority in Poland, whose paramilitary organization, the Freikorps, attacked Polish units from the rear.

Several skirmishes took place, most of them in the densely populated industrial areas of the cities of Ruda Śląska, Chorzów and Katowice.

The units destroyed by the attackers were located in the Pszczyna Forest, their task was to provide a connection between Operational Groups 'Silesia' and 'Bielsko'.