21 August

Jul

1 July

August

Sep

1 September

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

31

1

2

3

4

Other dates

Lonsdale Battalion events that took place on 21 August.
For events that took place elsewhere, see 21 August on The Great War wiki.

1914

• Template:WF - Belgians forced to abandon their trenches at Namur.
  •  Battle of Charleroi, between Mons and the Meuse, between French and Germans begins.
  •  British move towards Mons.
• Template:EF - East Prussia: Advance of Second Army under Samsonov; occupation (August 21-23) of Allenstein, Neidenburg, Soldau, Johannisburg, etc.
• Template:NO - South Africa invaded by German troops.

1915

• Template:SF - Second British Suvla attack (Gallipoli) on Anafarta fails.
• Template:NO - German Fleet retires from Riga, disembarkation having failed.
• Template:PO - British Government declares cotton absolute contraband.

References/notes

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