Curated atlas · Military

World War I

From the Balkan crises to the Treaty of Versailles — trench warfare, technological horrors, and the collapse of empires.

9 years

468 blocks

22 events

6 stages

1 block = 1 week · 1 row = 52 weeks9y · 468 blocks

1912

1917

Stages

Timeline ledger

Chronicle

22 events · 6 stages

Pre-war tensions

2y 25w

Jan 1, 1912 → Jun 22, 1914

First Balkan War begins

Oct 7, 1912

Second Balkan War

Jun 23, 1913

War outbreak & opening campaigns

27w

Jun 22, 1914 → Dec 28, 1914

Archduke Franz Ferdinand assassinated

Jun 22, 1914

Austria declares war on Serbia

Jul 27, 1914

Germany invades Belgium

Aug 3, 1914

First Battle of the Marne

Aug 31, 1914

Christmas Truce

Dec 21, 1914

Trench warfare stalemate

2y 13w

Dec 28, 1914 → Mar 26, 1917

Gallipoli Campaign begins

Apr 19, 1915

RMS Lusitania sunk

May 3, 1915

Battle of Verdun begins

Feb 21, 1916

Battle of Jutland

May 29, 1916

Battle of the Somme begins

Jun 26, 1916

Zimmermann Telegram intercepted

Jan 15, 1917

US entry & Eastern Front collapse

50w

Apr 2, 1917 → Mar 18, 1918

United States enters the war

Apr 2, 1917

Battle of Passchendaele begins

Jul 30, 1917

Russian October Revolution

Nov 5, 1917

Treaty of Brest-Litovsk

Feb 25, 1918

Final offensives & Armistice

34w

Mar 18, 1918 → Nov 11, 1918

German Spring Offensive

Mar 18, 1918

Hundred Days Offensive begins

Aug 5, 1918

Peace settlement

1y 8w

Nov 11, 1918 → Jan 5, 1920

Armistice — 11th hour, 11th day, 11th month

Nov 11, 1918

Treaty of Versailles signed

Jun 23, 1919

League of Nations established

Jan 5, 1920

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