Aug
September
Oct
Lonsdale Battalion events that took place on 20 September.
For events that took place elsewhere, see 20 September on The Great War wiki.
1914
Western Front
Eastern Front
Southern Front
- Quietude in the Balkan theatre of war.
- HMS Pegasus disabled by German cruiser Königsberg at Zanzibar.
References/notes
Lord Edward Gleichen (1918–1920). Chronology of the War. Volumes I, II & III. Constable & Company, London. (Copyright expired)