The historians recalled the Polish invasions of the early 17th century.

The Moldavian prince Stephen the Great was unable to aid in its defence, being under threat of a Polish invasion.

Within two weeks of the Polish invasion, Chicopee was chosen for a new base.

The Signing supposed to be held in Cherkasy, was moved after a Polish invasion interfered.

During the Polish invasion conducted "security operations" behind the lines.

In 1611-1612, it suffered from the Polish invasion.

Assigned to Luftflotte 2 during the Polish invasion (Fall Weiss) the unit saw action for the first time.

The springs are believed to have appeared during the Polish invasion in the beginning of the 17th century.