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Everywhere one looks you see sadness these days.  The other day on the train a woman sat counting the fingers on her hand.  One, two, three, four, five she said, then began the counting again.  She repeated herself over and over.  Some of us riding the car couldn't help but to start smiling at her.  Her husband then spoke in a soft voice.  Ladies and gentlemen, please don't laugh at my wife.  She has lost all five of her sons in battle defending our fine nation.  Now she is gone in the head and I am taking her to the asylum.

The Nations Involved in WWI

Between the Wars

Bismarck

Declaration of War (American)

Flanders Field

Gavrilo Princip

Kaiser Wilhelm II

Marne

Otto Dix

Passchendaele

Pershing

Sasson

Schlieffen Plan

Somme

Submarine

Verdun

Wilfred Owen, "Gas"

Woodrow Wilson

World War One Battles

Letters from the Front

Edward Luckart

Albert Smith

A Special Christmas Story

Christmas 1914

Music from World War One

Over There

Long Way To Tipperary

Pack Up Your Troubles

 

World War One, Nations Involved 

Austria-Hungary

Declared war on Serbia .........July 28, 1914
 
Declared war on Russia ........Aug 6, 1914
 
Declared war on Belgium ......Aug 28, 1914
 
Declared war on Portugal ......March 15, 1916

Belgium
 
Refused German ultimatum demanding permission for German troops to cross Belgium Aug 2, 1914
 
Invaded by Germany .........Aug 3-4, 1914

Bolivia
 
Severed relations with Germany ........April 13, 1917

Brazil
 
Severed relations with Germany .....April 11, 1917
 
Declared war on Germany .......Oct 26, 1917

Bulgaria
 
Declared war on Serbia .......Oct 14, 1915
 
Declared war on Romania ......Sept 1, 1916

China
 
Severed relations with German .....March 14, 1917
 
Declared war on Germany .....Aug 14, 1917
 
Declared war on Austria-Hungary ....Aug 14, 1917

Costa Rica
 
Severed relations with Germany ....Sept 21, 1917
 
Declared war on Germany ...May 23, 1918

Cuba
 
Declared war on Germany ....April 7, 1917

Ecuador
 
Severed relations with Germany ....Dec 8, 1917

France and their colonies
 
Invaded by Germany ......Aug 2, 1914
 
Declared war on Austria-Hungary .....Aug 12, 1914
 
Declared war on Turkey ....Nov 5, 1914
 
Declared war on Bulgaria ....Oct 16, 1915

Germany
 
Declared war on Russia ....Aug 1, 1914
 
Declared war on France ....Aug 3, 1914
 
Declared war on Belgium ....Aug 4, 1914
 
Declared war on Portugal .....March 9, 1916

Great Britain/Canada/Australia/and the remainder of the British Common Wealth and Empire including India.
 
Declared war on Germany ....Aug 4, 1914
 
Declared war on Austria-Hungary ....Aug 12, 1914
 
Declared war on Turkey ....Nov 5, 1914
 
Declared war on Bulgaria ....Oct 15, 1915

Greece
 
Declared war on Austria-Hungary, Bulgaria, Germany and Turkey ....June 27, 1917

Guatemala
 
Declared war on Germany ....April 23, 1918

Haiti
 
Declared war on Germany ....July 12, 1918

Honduras
 
Declared war on Germany ....July 19, 1918

Italy
 
Declared war on Austria-Hungary .....May 23, 1915
 
Declared war on Turkey .....Aug 21, 1915
 
Declared war on Bulgaria .....Oct 19, 1915
 
Declared war on Germany ......Aug 28, 1916

Japan
 
Declared war on Germany .....Aug 23, 1914
 
Declared war on Austria-Hungary .....Aug 25, 1914

Liberia
 
Declared war on Germany .....Aug 4, 1914

Montenegro
 
Declared war on Austria-Hungary ....Aug 5, 1914
 
Declared war on Germany .....Aug 8, 1914
 
Declared war on Bulgaria .....Oct 15, 1915

Nicaragua
 
Declared war on Germany and Austria-Hungary .....May 8, 1918

Panama
 
Declared war on Germany ....April 7, 1917
 
Declared war on Austria-Hungary .....Dec 10, 1917

Peru
 
Severed relations with Germany .....Oct 6, 1917

Portugal
 
See Germany and Austria-Hungary in this table

Romania
 
Declared war on Austria-Hungary ....Aug 27, 1916
 
Capitulated to Central Powers by Treaty of Bucharest .....May 7, 1918
 
Re-entered the war on the side of the Allies ....Nov 10, 1918

Russia
 
Declared war on Turkey .....Nov 2, 1914
 
Declared war on Bulgaria ....Oct 19, 1915

San Marino
 
Declared war on Austria-Hungary ....June 3, 1915

Serbia
 
Declared war on Germany .....Aug 6, 1914
 
Declared war on Turkey .....Nov 2, 1914

Siam
 
Declared war on Germany and Austria-Hungary .....July 22, 1917

Turkey
 
Declared war on Romania ....Aug 30, 1916
 
Severed relations with the US .....April 23, 1917

United States
 
Declared war on Germany ....April 6, 1917
 
Declared war on Austria-Hungary ....Dec 7, 1917

Uruguay
 
Severed relations with Germany .....Oct 7, 1917
 

***  Much of Africa was held by European powers as colonies and thus Africans also willingly fought in World War One.

World History Project