Canadian Expeditionary Force Study Group
"The Matrix Project"

Chronology

Home Up 1914 1915 1916 1917 1918 1919 1920

This Page Last Updated January 26, 2009

Chronology of the Great War

In order to move from the "Static ORBAT" through the "Fluid ORBAT" to the "Temporal ORBAT" (a characteristic that refers to the time at which a given data set was acquired) it is first necessary to have a detailed chronology of the Great War.  This Chronology Matrix Utility is the first step toward the development of the Temporal ORBAT. To achieve that goal, we need the input of many members in many countries, representing the allied and axis forces in play from 1914-1920. At the present time we have not included 1921, however we recognize that the CWGC (Commonwealth War Graves Commission) did set the reporting dates of casualties from August 4, 1914 to August 31, 1921.

The Chronology of the Great War that will developed here has to apply to all nations but then to develop the Temporal ORBAT it has to apply specifically to the Canadian Expeditionary Force.  As all can imagine, many of the documents tell of Canadian actions as if they were British actions.  We must separate the two, then also acknowledge those that are both British and Canadian, or perhaps even Commonwealth actions.

Declarations of War - Major Countries

country

declares war on
severs relationship with
invaded
signs treaty with

country
Countries Austria Belgium Bulgaria China France Germany Great
Britain
Greece
(note 2)
Italy Japan Portugal Romania Russia Serbia Turkey United
States
Austria - - 17-Aug
1915
14-Aug
1917
10-Aug
1914
 - 12-Aug
1914
27-June
1917
24-May
1915
25-Aug
1914
- 27-Aug
1916
- - 17-Aug
1915
7-Dec
1917
Belgium 28-Aug
1914
- - - - 4-Aug
1914
4-Aug
1914
- - - - - - - - - -
Bulgaria  17-Aug
1915
- -  - 16-Oct
1915
 - 15-Oct
1915
27-June
1917
19-Oct
1914
- - - 19-Oct
1915
16-Oct
1915
17-Aug
1915
 -
France  - - - - - 2-Aug
1914

3-Aug
1914
26-Apr
1915
 24-Sept
1915
- - - - 26-Apr
1915
- 23-Nov
1914
-
Germany  17-Aug
1915
4-Aug
1914
 17-Aug
1915
14-Mar
1917

14-Aug
1917
3-Aug
1914
- 4-Aug
1914
27-June
1917
28-Aug
1916
23-Aug
1914
23-Nov
1914
- 7-Aug
1914
6-Aug
1914
3-Aug
1914
17-Aug
1915
3-Feb
1917

6-Apr
1917
Great
Britain
 - - - - 26-Apr
1915
- - 24-Sept
1915
- - -  - 26-Apr
1915
- 23-Nov
1914
 -
Greece - - - - 24-Sept
1915
- 24-Sept
1915
- - - - - - - - -
Italy - - - - 26-Apr
1915
24-May
1915
26-Apr
1915
- - - - - 26-Apr
1915
- - -
Japan 27-Aug
1914

25-Aug
1914
- - - - - - - - - - - - - - -
Mont
enegro
9-Aug
1914
- - - - - - - - - - - - - - -
Portugal  15-Mar
1916
- - - - 9-March
1916
-  - - - -   - - - -
Romania  - - 1-Sept
1916
- - 14-Sept
1916
- - - - - - - - 29-Aug
1916
-
Russia 6-Aug
1914
- - - 26-Apr
1915
1-Aug
1914
26-Apr
1915
 - - - - - -  - 29-Aug
1914
-
Serbia 28-July
1914
- 14-Oct
1915
 - - - - - - - - - - - - -
Turkey  17-Aug
1915
- 17-Aug
1915
- 5-Nov
1914
- 5-Nov
1914
27-June
1917
21-Aug
1915
- - - 2-Nov
1914
2-Dec
1914
-  -
United
States
- - - - - - - - - - - - - - 23-Apr
1917
-

Declarations of War - Minor Countries

country

declares war on
severed relationship with
invaded
signs treaty with

country
Countries Bolivia Brazil Bulgaria Costa
Rica
Cuba Ecuador Guatemala Haiti Honduras Japan Liberia Mont
enegro
Nicaragua Panama Peru Romania
(note 1)
San
Marino
Siam Uruguay
Austria - - - -  16-Dec
1917
- 22-Apr
1918
-   -  - 8-Aug
1914
8-May
1918
 10-Dec
1917
  27-Aug
1916
24-May
1914

3-June
1915
 21-July
1917
-
Bulgaria - - - - - - - - - -  - 15-Oct
1915
- -   - - - -
Germany 13-Apr
1917
11-Apr
1917

26-Oct
1917
 - 21-Sept
1917

23-May
1918
7-April
1917
8-Dec
1917
23-Apr
1918
15-July
1918
19-July
1918
4-Aug
1914

23-Aug
1914
4-Aug
1917
 8-Aug
1914
8-May
1918
24-May
1918
7-Apr
1917
6-Oct
1917
- - 21-July
1917 
7-Oct
1917
Romania - - 1-Sept
1916
- - - - - - - - - - -   - - - -
Serbia - - 14-Oct
1915
- - - - - - - - - - -   - -  - -

Notes:

  1. Romania capitulated to the Central Powers by the Treaty of Bucharest on May 7, 1918 and then re-entered the war on the side of the allies on November 10, 1918
  2. Greece declarations are for the formal declarations of Greece and not the earlier declarations by the Provisional Government.

 

The Forum Topic that addresses this project is here: Chronology of War. Please join us there and add your comments, updates, corrections and suggestions.

The following reference sources have been used to create the information shown in the chronology tables:

Reference Texts:

  1. Horne, C. F. and W. F. Austin. 1920. The Great Events of the Great War. Volume VII, Appendix II.  National Alumni Series.
  2. Nicholson, G. W. L. 1962. Official History of the Canadian Army in the First World War: Canadian Expeditionary Force 1914-1919. Minister of National Defence, Ottawa, Ontario, Canada.
  3. Duffy, M. 2004. The War to End All Wars: War Timeline. Website Version of "FirstWorldWar.com".
  4. Duguid, A. F. 1938. Official History of the Canadian Forces in the Great War 1914-1919: General Series Volume I from the Outbreak of War to the Formation of the Canadian Corps August 1914-September 1915. Minister of National Defence, Ottawa, Ontario, Canada.
  5. Commonwealth War Graves Commission. 2009. Designated War Years.
  6. Cruttwell. 1936 & 1982. A History of the Great War 1914-1918: Appendix II Table of Principle Events. Granada Publishing Limited, London. England.
  7. Livesay, J. F. B. 1919.  Canada's Hundred Days: With the Canadian Corps from Amiens to Mons, Aug. 8 - Nov. 11, 1918.  Thomas Allen, Toronto, Ontario Canada.
  8. Ruoff, H. W. 1918.  Book of the War: A Concise View of Its Causes, Countries Involved, Theatre of Action, Leaders and Chief Events. Standard Publication Company, Chicago, Illinois, USA.

Web Sites:

  1. Declarations of War: From World War 1 Document Archive.
  2. World War One: Declarations of War (United States, Department of State)

 

 

Copyright 2006, 2007, 2008, 2009 Richard Laughton
Great War Research Company, A Division of Laughton Management Corporation
A Shared Resource of the Canadian Expeditionary Force Study Group
CEFSG Home Page    CEFSG Forum Group    Site Index 
Contact Matrix    Project Summary Tables   Utilities