12 September

Aug

1 August

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1 October

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Other dates

Lonsdale Battalion events that took place on 12 September.
For events that took place elsewhere, see 12 September on The Great War wiki.

1914

Western Front

• Troyon: Germans compelled to raise siege.
• Luneville reoccupied by the French.
• Belgian sortie from Antwerp threatens German communications.

Eastern Front

• Galicia: End of Battle of Grodek and Rava-Ruska: total defeat of Austrians; Grodek captured.
• Poland: Austrians try to cross the San under heavy fire.

Southern Front

• Syrmia: Serbians occupy Jarak.

Naval and Overseas Operations

• East Africa: Germans defeated near Kisi.

References/notes

Lord Edward Gleichen (1918–1920). Chronology of the War. Volumes I, II & III. Constable & Company, London. (Copyright expired)