Battle of the Border
September 1939 · Poland
Result German victory
German and Polish forces fought along the frontier in the first days of the invasion of Poland. The Germans broke through and forced the Polish army back.
Axis
Allies
Battles 7
- Battle of Mława September 1–3, 1939 · German victory
- Charge at Krojanty September 1, 1939 · German victory
- Battle of Tuchola Forest September 1–5, 1939 · German victory
- Battle of Mokra September 1, 1939 · Polish victory
- Battle of Chojnice (1939) September 1, 1939 · German victory
- Battle of Lasy Królewskie September 1, 1939 · Inconclusive
- Battle of Węgierska Górka September 1–3, 1939 · German victory

