• Assasination of leaders

    Archduke Franz Ferdinand, heir to Austria-Hungary's throne, and his wife, Sophie, are assassinated by Serbian nationalist Gavrilo Princip while the couple were visiting Sarajevo.
  • Austria-Hungary declares war on Serbia.

    first to declare
  • Germany declares war on Russia.

    second to declare
  • Germany declares war on France.

    3rd to declare
  • The United Kingdom declares war on Germany

    fourth after Germany invades Belgium.
  • Austria-Hungary declares war on Russia and Serbia declares war on Germany.

    fifth
  • U.S. President Woodrow Wilson announces the U.S. will remain neutral.

    huge for tne US
  • The Battle of Tannenberg begins

    first battle
  • The First Battle of the Marne begins

    Trench warfare begins as soldiers on both sides dig in.
  • Battle of Ypres begins

  • The United Kingdom announces that the North Sea is a military area

    effectively creating a blockade of goods into Germany.
  • The unofficial Christmas truce is declared

  • Germany declares a "war zone" around Great Britain

    essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets.
  • The Second Battle of Ypres begins.

    It is during this battle that the Germans first use poison gas.
  • The Battle of Gallipoli begins.

  • Tsar Nicholas II takes personal control over Russia's armies.

  • The Battle of Verdun begins.

    The Battle of Verdun was the longest battle of World War I and was one of the bloodiest.
  • The Battle of Jutland

    the major naval battle of the war, begins
  • The Battle of the Somme begins.

    During the Battle of the Somme, tanks are first introduced into battle.
  • Russian Tsar Nicholas II abdicates.

  • The United States declares war on Germany.