Commanded by Colonel Janusz Galadyk, it was part of the Bielsko Operational Group of the Army Kraków.
It consisted mostly of units of the Border Defence Corps (KOP), sent to southwestern Poland from the Eastern Borderlands.
Created on July 7, 1939, its task was to defend the southern wing of the Army, in the section between Żywiec and Rabka.
In bitter fights around Wegierska Gorka, the Berezwecz Battalion of the KOP was destroyed and the following night Colonel Galadyk ordered his men to leave the valley of the Sola river, as the neighboring Polish 21.
It was helped for a while by the 10th Cavalry Brigade under Colonel Stanisław Maczek, its task was to halt the Germans, who wanted to gain control over the Zakopane - Kraków road.