20 September

Aug

1 August

September

Oct

1 October

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

1

2

3

4

5

Other dates

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

• The Aisne: bombardment of Reims Cathedral.

Eastern Front

• East Prussian Frontier: Russians abandon Augustovo: Germans lay siege to Osovyets.

Southern Front

• Quietude in the Balkan theatre of war.

Naval and Overseas Operations

• 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)