September 1939 day by day

Entries come only from the atlas database; days without entries are marked as such. Click a date to open that day on the map.

1. 1 September 1939 →

   Invasion of Poland (September Campaign)

   Battle of Westerplatte

2. 2 September 1939 →

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte

3. 3 September 1939 →

   Britain and France declare war on Germany

   Battle of the Atlantic

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte

4. 4 September 1939 →

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte, Battle of the Atlantic

5. 5 September 1939 →

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte, Battle of the Atlantic

6. 6 September 1939 →

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte, Battle of the Atlantic

7. 7 September 1939 →

   Saar Offensive

   ongoing: Invasion of Poland (September Campaign), Battle of Westerplatte, Battle of the Atlantic

8. 8 September 1939 →

   Siege of Warsaw

   ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive

9. 9 September 1939 →

   Battle of the Bzura

   ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw

10. 10 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

11. 11 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

12. 12 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

13. 13 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

14. 14 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

15. 15 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

16. 16 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Saar Offensive, Siege of Warsaw, Battle of the Bzura

17. 17 September 1939 →

    Soviet invasion of Poland

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Battle of the Bzura

18. 18 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Battle of the Bzura, Soviet invasion of Poland

19. 19 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Battle of the Bzura, Soviet invasion of Poland

20. 20 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

21. 21 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

22. 22 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

23. 23 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

24. 24 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

25. 25 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

26. 26 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

27. 27 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

28. 28 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Siege of Warsaw, Soviet invasion of Poland

29. 29 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Soviet invasion of Poland

30. 30 September 1939 →

    ongoing: Invasion of Poland (September Campaign), Battle of the Atlantic, Soviet invasion of Poland