At 08:00 hours, 1 September, German troops, still without a formal declaration of war issued, attacked near the Polish town of Mokra; the battle of the border had begun.
Pada 1 September pukul 08:00, pasukan Jerman, tanpa mengeluarkan deklarasi perang resmi, menyerang di dekat kota Polandia Mokra; pertempuran perbatasan telah dimulai.