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Declarations of War from Around the World

This presentation includes the first declaration of war from Austria-Hungary from July 28, 1914, along with the declarations of war from twenty-one countries from both Allied and Central Powers. In addition to the declarations of war, the display contains congressional resolutions, diplomatic notes and telegrams leading up to and/or containing the declaration of war, mobilization orders, and declarations of a state of war.

Although the majority of the declarations of war were issued in 1914, there were a number of countries that did not declare war until close to its end in 1918.

Countries that were aligned with the Allied Powers but did not issue a formal declaration of war are not included.

Austria-Hungary

Kriegserklärung, July 28, 1914

On July 28, 1914, the Austrian-Hungarian government declared war on Serbia.  The Declaration of War was published in French and German in a special edition of the Wiener Zeitung, the official publication used by the government of the Republic of Austria for its formal announcements.

Kriegserklärung  [Declaration of War], Wiener Zeitung [Vienna Newspaper], July 28, 1914, Extraausgabe [Special Edition], Amtlicher Teil [Official Section], 19,
LCCN: https://lccn.loc.gov/sf84019129.
Full Text PDF, 1.63MB

Belgium

Letter from the German Ambassador to Belgium, Aug. 2, 1914

This letter gave the Belgian government an ultimatum to allow German troops to pass through Belgian territory.

Note remise le 2 août 1914, à 19 heures, par M. de Below Saleske [Klaus von Below-Saleske], Ministre d’Allemagne, à M. Davignon, Ministre des Affaires étrangères  [Note Given August 2, 1914, at 19 hours, by M. de Below Saleske [Klaus von Below-Saleske], Minister of Germany, to M. Davignon, Minister of Foreign Affairs], in Documents Diplomatiques 1914: La Guerre Européenne [Diplomatic Documents 1914: The European War] (Paris: Ministère des Affaires Étrangères [Ministry of Foreign Affairs], 1914), 201, LCCN: https://lccn.loc.gov/15004911.
Full Text-PDF, 890KB

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Belgium

Letter from the Belgian Foreign Minister to the German Ambassador, Aug. 3, 1914

In this letter, the Belgian government refused to comply with the German ultimatum to allow German troops to pass through Belgian territory.

Note remise par M. [Julien] Davignon, Ministre des Affaires étrangères, à M. de Below Saleske, Ministre d’Allemagne, Bruxelles, le 3 août 1914 (7 heures du matin) [Note Given by M. [Julien] Davignon, Minister of Foreign Affairs, to M. de Below Saleske, Minister of Germany, Brussels, August 3, 1914, 7 in the morning], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 202, LCCN: https://lccn.loc.gov/15004911.
Full Text-PDF, 677KB

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Belgium

Telegram from the Belgian Foreign Minister to the Belgian Ambassadors in London and Paris, Aug. 4, 1914

This telegram informed the Belgian ambassadors of the violation of Belgian territory by German troops.  German troops had entered Belgium near the village of Gemmenich, and were heading towards the city of Liege, which they attacked over the following days.

Télégramme addressé par M. Davignon, Ministère des Affaires Étrangères, aux Ministres du Roi à Londres et à Paris, Bruxelles, le 4 août 1914 [Telegram Addressed by M. Davignon, Ministry of Foreign Affairs, to the King’s Ministers in London, Brussels, August 4, 1914], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 203, LCCN: https://lccn.loc.gov/15004911 .
Full Text-PDF, 678KB

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Brazil

Decree No. 3,361, Oct. 26, 1917

This decree, issued by Brazil’s National Congress and sanctioned by the President, recognized and proclaimed a state of war initiated by the German Empire against Brazil. It authorized the President of the Republic to adopt all protective measures for national and public security as the President deemed necessary.

Decreto No. 3.361, de 26 de Outubro de 1917, Diario Oficial [Official Gazette], anno LVI [vol. 56], no. 249, Oct. 27, 1917, LCCN: https://lccn.loc.gov/78647568.
Full Text-PDF, 2.27KB

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China

Declaration of War Against Germany, Aug. 14, 1917

On August 14, 1917, the Chinese government declared war on Germany and Austria-Hungary.  The Declaration was published in the Government Gazettes of the Beiyang government.

大總統布告 [Presidential Proclamation], 政府公報 [Government Gazettes], No. 567, Aug. 14, 1917,
LCCN: https://lccn.loc.gov/2005217977.
Full Text-PDF, 701KB

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Costa Rica

Declaration of War Against Germany, May 23, 1918

Accord No. 2 which is issued by the Congress of Costa Rica authorizing the Executive Branch to declare war on the German Empire.
Decree No. 4 which is issued by President Federico Tinoco provides that from this moment forward there is a state of war between the Republic of Costa Rica and the Government of the German Empire.

Public domain image courtesy of the Legislative Assembly, the Department of Archives, Processing and Research, and the Center for Legislative Research of Costa Rica.
LCCN: https://lccn.loc.gov/53026328.
Full Text-PDF, 390KB

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Cuba

Resolución Conjunta, Apr. 7, 1917

On April 7, 1917, the Cuban government declared war on Germany in a joint resolution by the President and Congress. The declaration of war was published in Spanish in the Cuban Official Gazette.

Resolución Conjunta [Joint Resolution by the President and Congress], Gaceta Oficial [Official Gazette], Apr. 7, 1917,
LCCN: https://lccn.loc.gov/76643040.
Full Text-PDF, 13.19MB

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France

Letter from the Ambassador of France in Vienna to René Viviani, the French President of the Council of Ministers and Foreign Minister, June 28, 1914

This letter from the Ambassador of France to René Viviani, the French President of the Council of Ministers (the equivalent of the Prime Minister), informed Viviani that Archduke Franz Ferdinand has been assassinated in Sarajevo.

M. [Alfred] Dumaine, Ambassadeur de France à Vienne, à M. René Viviani, Président du Conseil, Ministre des Affaires Etrangères, Vienne, le 28 juin 1914 [M. [Alfred] Dumaine, Ambassador of France at Vienna, to M. René Viviani, President of the Council, Minister of Foreign Affairs, Vienna, July 2, 1914], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 25,
LCCN: https://lccn.loc.gov/15004911.
Full Text-PDF, 564KB

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France

Letter from the Ambassador of France in Vienna to René Viviani, July 2, 1914

This letter informed Viviani of the Austrian government’s reaction to the assassination:

“The crime of Sarajevo is giving rise to the gravest grudges in Austrian military circles and among all those who are not resigned to letting Serbia keep the place it has won in the Balkans. 
The investigation into the origin of the attack, which would be demanded of the Government of Belgrade under conditions intolerable to its dignity, would provide, in case of a refusal, the excuse to proceed to military action.”

M. Dumaine, Ambassadeur de France à Vienne, à M. René Viviani, Président du Conseil, Ministre des Affaires Etrangères, Vienne, le 2 juillet 1914 [July 2, 1914], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 25, LCCN: https://lccn.loc.gov/15004911.
Full Text-PDF
, 586KB

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France

Proclamation of the French Government, Aug. 2, 1914

This proclamation called upon the French nation to prepare for war, and informed the nation of the official decree initiating the mobilization of the French armed forces.

Le Président de la République, R. [Raymond] Poincaré et al., “A La Nation Française” [“To the French Nation”], Journal Officiel de la République Française [Official Gazette of the French Republic], August 2, 1914, Partie Officielle [Official Section], 7053–54,
LCCN: https://lccn.loc.gov/2002238556.
Full Text-PDF, 2.63MB

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France

Letter from the German Ambassador in Paris to René Viviani, Aug. 3, 1914

This letter from the German Ambassador declared a state of war between Germany and France.

Lettre remise par l’Ambassadeur d’Allemagne à M. René Viviani, Président du Conseil, Ministre des Affaires étrangères, au cours de son audience de départ, le 3 août 1914, à 18 h. 45, [Letter Given by the Ambassador of Germany to M. René Viviani, President of the Council, Minister of Foreign Affairs, During His Departure Meeting, August 3, 1914, at 18 h. 45], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 149, LCCN: https://lccn.loc.gov/15004911.
Full Text-PDF
, 950KB

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France

Decree of the French President, Aug. 3, 1914

This Decree summoned the French Parliament for an extraordinary session on August 4, 1914.

Le Président de la République Française, Vu l’article 2 de la loi constitutionnelle du 16 juillet 1875, Décrete [The President of the French Republic, in View of Article 2 of the Constitutional Law of July 16, 1875, Decrees], Journal Officiel de la République Française, August 3, 1914, Partie Officielle, 7077,
LCCN: https://lccn.loc.gov/2002238556 .
Full Text-PDF, 1.30MB

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France

Announcement of a Series of French Laws, Aug. 6, 1914

The laws announced by this document concerned the “state of siege” that France was experiencing.

Lois [Laws], Journal Officiel de la République Française, August 6, 1914, Sommaire: Partie Officielle [Summary: Official Section], 7125–31,
LCCN: https://lccn.loc.gov/2002238556.
Full Text-PDF, 7.05MB

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France

Message from the French Minister of Foreign Affairs to French Diplomatic Representatives Around the World, Aug. 13, 1914

This message informed French diplomats about the declaration of a state of war with Austria-Hungary made the previous day by the French government and that England and France were acting in accord.

M. [Gaston] Doumergue, Ministre des Affaires étrangères, aux Représentants diplomatiques de France à Saint-Pétersbourg, Rome, Constantinople, Berne, Madrid, Tokio, Washington, La Haye, Bruxelles, Christiania, Copenhague, Stockholm, Lisbonne, Belgrade, Sofia, Bucarest, Athènes, Cettigné, Mexico, Rio de Janeiro, Buenos-Aires, Lima, Santiago du Chili, Le Caire, Addis-Abbeba, Téhéran, Durazzo, Pékin . . . Paris, 13 août 1914, 12 h. 50 [M. [Gaston] Doumergue, Minister of Foreign Affairs, to the Diplomatic Representatives of France at St. Petersburg, Rome, Constantinople, Bern, Madrid, Tokyo, Washington, the Hague, Brussels, Christiania, Copenhagen, Stockholm, Lisbon, Belgrade, Sofia, Bucharest, Athens, Cetinje, Mexico, Rio de Janeiro, Buenos-Aires, Lima, Santiago, Cairo, Addis Ababa, Tehran, Durrës, Beijing . . . Paris, Aug. 13, 1914, 12 h. 50], in Documents Diplomatiques Française (1871–1914) [French Diplomatic Documents (1871–1914], vol. 11, 3ème série 1911–1914 [3rd series 1911–1914] (Paris: Ministère des Affaires Étrangères 1936), 588,
LCCN: https://lccn.loc.gov/88647881.
Full Text-PDF, 689KB

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France

Declaration of the Triple Entente, Sept. 4, 1914

In this declaration, the British, French, and Russian governments committed themselves to not demand peace terms or conclude peace separately during the war without their mutual agreement.

Déclaration: M. [Théophile] Delcassé, Ministre des Affaires étrangères, à Ministère des Affaires Etrangères, Paris, le 4 septembre 1914 [Declaration: M. [Théophile] Delcassé, Minister of Foreign Affairs, to the Ministry of Foreign Affairs, Paris, September 4, 1914], in Documents Diplomatiques 1914: La Guerre Européenne (Paris: Ministère des Affaires Étrangères, 1914), 175, LCCN: https://lccn.loc.gov/15004911
Full Text-PDF, 582KB

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Germany

Declaration of a State of War, July 31, 1914

According to the procedure laid down in article 68 of the Constitution of the German Empire, the German Emperor Wilhelm I enacted a regulation that declared a state of war in Germany.

Verordnung, betreffend die Erklärung des Kriegszustandes [Regulation Concerning the Declaration of a State of War], July 31, 1914, Reichs-Gesetzblatt [Imperial Law Gazette], July 31, 1914, 263,
LCCN: https://lccn.loc.gov/14013198 .
Full Text-PDF, 549KB

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Germany

General Mobilization, Aug. 1, 1914

On August 1, 1914, German Emperor Wilhelm I declared the general mobilization of the German army and navy.  August 2, 1914, was designated as the first day of mobilization.

Bekanntmachung [Proclamation], August 1, 1914, Deutscher Reichsanzeiger und Königlich Preußischer Staatsanzeiger [German Imperial Official Journal and Royal Prussian Official Journal], Sonderausgabe [Special Edition], Aug. 2, 1914,
LCCN: https://lccn.loc.gov/2016214031 .
Full Text-PDF, 310KB

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Germany

Declaration of War Against Russia, Aug. 1, 1914

A telegram from the Imperial Chancellor to the German Ambassador in Petersburg, Russia, dated August 1, 1914, 12:52 p.m., contained the text of the declaration of war against Russia in case Russia made no satisfactory reply to the German demand to suspend the mobilization of the Russian army.  The telegram instructed the Ambassador to deliver the declaration at 5 p.m. on August 1 if the demands were not met.

Telegramm des Reichskanzlers an den Kaiserlichen Botschafter in Petersburg von 1. August 12:52 p.m. Dringend [ Telegram from the Imperial Chancellor to the Imperial Ambassador in Petersburg, August 1, 12:52 p.m. Urgent], in Auswärtiges Amt [Foreign Office], Das Deutsche Weissbuch, über den Ausbruch des Deutsch-Russisch-Französischen Krieges, Nach dem dem Reichstag Vorgelegten Material [The German White Book, on the Outbreak of the German-Russian-French War, According to the Documents Provided to the Reichstag] (Neumünster/Leipzig: Nordische Velagsanstalt, R. Hieronymus, 1914), 46, Anlage [Annex] 26,
LCCN: https://lccn.loc.gov/44037773.
Full Text-PDF, 395KB

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Germany

Declaration of War Against France, Aug. 3, 1914

A telegram from the Imperial Chancellor to the German Ambassador in Paris dated August 3, 1914, instructed the Ambassador to inform the French government at 6 p.m. that, because of the presence of French troops on German territory, Germany was forced into a state of war.

Der Reichskanzler an den Botschafter in Paris [The Imperial Chancellor to the Ambassador in Paris], August 3, 1914, in Auswärtiges Amt [Foreign Office], Die Deutschen Dokumente zum Kriegsausbruch [German Documents Relating to the Outbreak of the War], Band [vol.] III, Vom Bekanntwerden der Russischen Allgemeinen Mobilmachung bis Zur Kriegserklärung an Frankreich [From the Publication of the Russian Mobilization to the Declaration of War Against France], (Charlottenburg: Deutsche Verlagsgesellschaft für Politik und Geschichte, 1919), 185, No. 734,
LCCN: https://lccn.loc.gov/20009766 .
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Germany

Declaration of War Against France, Aug. 3, 1914

A telegram from the Imperial Chancellor to the German Ambassador in Paris contained the text of the Declaration of War on France dated August 3, 1914.  The telegram reached Paris in a mutilated condition.

Verstümmelter Text der Kriegserklärung an Frankreich [Mutilated Text of the Declaration of War Against France], August 3, 1914, in Auswärtiges Amt [Foreign Office], Die Deutschen Dokumente zum Kriegsausbruch German [Documents Relating to the Outbreak of the War], Band [vol.] III, Vom Bekanntwerden Der Russischen Allgemeinen Mobilmachung bis Zur Kriegserklärung an Frankreich [From the Publication of the Russian Mobilization to the Declaration of War Against France] (Charlottenburg: Deutsche Verlagsgesellschaft für Politik und Geschichte, 1919), 186, No. 734a,
LCCN: https://lccn.loc.gov/20009766.
Full Text-PDF, 1.11MB

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Germany

Declaration of War Against France, Aug. 3, 1914

A telegram from the German Ambassador dated August 3, 1914, that contained the text of the Declaration of War on France was presented to the French government in Paris.

In Paris überreichter Text der Kriegserklärung [Text of the Declaration of War Presented in Paris], August 3, 1914, in Auswärtiges Amt [Foreign Office], Die Deutschen Dokumente zum Kriegsausbruch German [Documents Relating to the Outbreak of the War], Band [vol.] III, Vom Bekanntwerden Der Russischen Allgemeinen Mobilmachung bis Zur Kriegserklärung an Frankreich [From the Publication of the Russian Mobilization to the Declaration of War Against France] (Charlottenburg: Deutsche Verlagsgesellschaft für Politik und Geschichte, 1919), 186, No. 734b,
LCCN: https://lccn.loc.gov/20009766 .
Full Text-PDF, 1.11MB

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Guatamala

Declaration of War Against Germany, Apr. 20, 1918

On April 20, 1918, the Guatemalan Congress issued a decree declaring war on Germany.  The Decree was sent to the President of the country for its publication and implementation.

Decreto No. 976, Apr. 23, 1918, El Guatemalteco, Diario Oficial [Official Gazette], April 27, 1918,
LCCN: https://lccn.loc.gov/78644144 .
Full Text-PDF, 745KB

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Haiti

Decree of President of Haiti, July 12, 1918

The President’s decree of July 12, 1918, officially declared war between Haiti and Germany.

Decret, July 12, 1918, Bulletin des Lois et Actes [Bulletin of Laws and Acts] (Département de la Justice [Department of Justice], Port-au-Prince, 1918), 73–74,
LCCN: https://lccn.loc.gov/sn95046904.
Full Text-PDF, 1.84MB

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Haiti

Proclamation of the President of Haiti, July 13, 1918

In this proclamation, President Philippe Sudré Dartiguenave addressed Haitian citizens on the justness of the Allied cause.

Proclamation, July 13, 1918, Bulletin des Lois et Actes [Bulletin of Laws and Acts] (Département de la Justice [Department of Justice], Port-au-Prince, 1918), 74–75,
LCCN: https://lccn.loc.gov/sn95046904.
Full Text-PDF, 1.84MB

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Honduras

Declaration of War Against Germany, July 19, 1918

On July 19, 1918, Honduras declared war on Germany in Decree No. 58.  The decree, published on July 20, 1918, did not mention Austria-Hungary.

Decree No. 58, July 19, 1918, La Gaceta, July 20, 1918, LCCN: https://lccn.loc.gov/sv85030520 .
Full Text-PDF, 871KB

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Italy

Declaration of War Against the Ottoman Empire, Aug. 21, 1915

This government notice dated August 21, 1915, and published in the official gazette on August 23, reviews the relations between Italy and Turkey.  It mentions that an ultimatum was presented to the Ottoman government on August 5, and that as the Ottoman government had not responded in a satisfactory fashion the Italian ambassador had on the 21st delivered a note to the Ottoman government informing it that Italy had declared war.

Italia e Turchia [Italy and Turkey], Aug. 21, 1915, Gazzetta Ufficiale del Regno D’Italia [Official Gazette of the Kingdom of Italy] (unofficial part) Aug. 23, 1915, n. 209, pp. 5008–5009,
LCCN: https://lccn.loc.gov/2006217004.
Full Text-PDF, 892KB

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Japan

Declaration of War Against Germany, Aug. 23, 1914

On August 23, 1914, the Japanese government declared war on Germany through Emperor Yoshihito’s issuance of the Imperial Rescript on Declaration of War.  The Cabinet published a notification of the Emperor’s rescript as Cabinet Notification No. 4 of 1914.

宣戦の詔書 [Sensen no shōsho, Imperial Rescript on Declaration of War] (Aug. 23, 1914), Kanpō, Extra ed., Aug. 23, 1914,
LCCN: https://lccn.loc.gov/75799131.
Full Text-PDF, 540KB

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Liberia

Liberia Joins the Allies

On August 4, 1917, Liberia joined the Allied and Associated Powers and declared war on Germany.  On December 20, 1918, Liberia appointed delegates to discussions of the Treaty of Versailles, which it later ratified on January 5, 1920.  On February 15, 1920, Liberia lifted its declaration of war against Germany. 

Declaration of War Against Germany, Aug. 4, 1917

In a joint resolution approving presidential action, Liberia joined the Allied and Associated Powers and declared war on Germany on August 4, 1917.

Joint Resolution Approving the Actions of the President in Severing Official Relations with the Government of the German Empire and Declaring the Existence of a State of War Between the Republic of Liberia and the Government of the German Empire (approved Aug. 1917), Acts Passed by the Legislature of Republic of Liberia During the Session of 1917 (Monrovia: Government Printing Office, 1917), 11,
LCCN: https://lccn.loc.gov/sv88041909.
Full Text-PDF, 618KB

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Nicaragua

Declaration of War Against Germany and Austria-Hungary, May 6, 1918

On May 6, 1918, the Nicaraguan Congress issued a decree declaring war against Germany and Austria-Hungary.  Nicaragua’s President signed the decree on May 8, 1918, and it was officially published in La Gaceta, the official gazette, on May 10, 1918.

El Senado y Cámara de Diputados de la República de Nicaragua, Decretan [The Senate and House of Representatives of the Republic of Nicaragua, Decree], La Gaceta, Diario Oficial [Official Gazette], May 10, 1918, LCCN: https://lccn.loc.gov/sf80000696 .
Full Text-PDF, 555KB

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Ottoman Empire

Declaration of War Against Russia, France, and the United Kingdom, Nov. 11, 1914

Sultan Mehmet Reşad (Mehmet V), the 35th and penultimate Sultan of the Ottoman Empire, read a proclamation of war against the United Kingdom, France, and Russia on November 11, 1914.  The proclamation was published in the official gazette, Takvim-i Vekayi, the following day. Essential to the formal declaration of secular war was the declaration of a “cihâd,” or “holy war,” by the highest religious authority of the Ottoman Empire,Şeyhülislam Ürgüplü Hayri Efendi, through the issuance of a religious decree, or “fetvâ-yı şerîfe,” which occurred on November 11, 1914.

Rusya Fransa ve İngiltere devletleriyle hal-i harb ilanı hakkında irade-i seniyye [Imperial Decree Concerning the Declaration of a State of War with the States of Russia, France, and the United Kingdom], Nov. 11, 1914 (29 Teşrin-i Evvel 1330), Takvim-i Vekayi, Nov. 12, 1914 (30 Teşrin-i Evvel 1330).
Full Text-PDF, 788KB

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Panama

Declaration of War Against Germany, Apr. 7, 1917

On April 7, 1917, the Panamanian government issued a proclamation declaring war on Germany.

Proclama [Proclamation], Apr. 7, 1917, in República de Panamá, Secretaría de Relaciones Exteriores [Ministry of Foreign Affairs], Documentos relacionados con la actual guerra europea [Documents Related to the European War] (Panama: Imprenta Nacional, 1917), 13–14, LCCN: https://lccn.loc.gov/08031525.
Full Text-PDF, 2.14MB

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Romania

Declaration of War Against Austria-Hungary, Aug. 28, 1916

On August 28, 1916, Romania’s King Ferdinand issued a Proclamation to Romanians signed by the members of the Council of Ministers declaring war on Austria-Hungary, following obligations under treaty with the Allies signed on August 17, 1916.  The proclamation was published in the official gazette on the same day.

Proclamation,  August 28, 1916, Monitorul Oficial, no. 108, August 28, 1916.
Full Text PDF, 1.05MB

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Russia

Declaration of War Against Germany, July 20, 1914

On July 20, 1914, Russian Emperor Nicolas II issued a manifesto announcing that, in response to the German declaration of war against the Russian Empire, Russia would enter into war against Germany.

Highest Manifesto, July 20, 1914, in God voĭny [Chronicles of War], ed. A. Oglin (1915), 3–4,
LCCN: https://lccn.loc.gov/43029887 .
Full Text-PDF, 747KB

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Russia

Declaration of War Against Austria-Hungary, July 26, 1914

On July 26, 1914, Russian Emperor Nicolas II issued a manifesto announcing that in response to the Austria-Hungarian declaration of war against the Russian Empire, Russia would enter into war against Austria-Hungary.

Highest Manifesto, July 26, 1914, in God voĭny [Chronicles of War], ed. A. Oglin (1915), 5–6,
LCCN: https://lccn.loc.gov/43029887
Full Text-PDF, 426KB

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Russia

Declaration of War against Turkey, Oct. 20, 1914

On October 20, 1914, Russian Emperor Nicolas II issued a manifesto announcing Russia’s war on Turkey, following its involvement in military activities as a German and Austrian ally.

Highest Manifesto, Oct. 20, 1914, in God voĭny [Chronicles of War], ed. A. Oglin (1915), 7–8,
LCCN: https://lccn.loc.gov/43029887 .
Full Text-PDF, 735KB

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Siam (Thailand)

Declaration of War Against Germany and Austria-Hungary, July 22, 1917

Siam’s July 22, 1917, declaration of war against Germany and Austria-Hungary was published in the Ratchakitchanubeksa (Government Gazette).

 

Royal Proclamation on War with Germany and Austria-Hungary, Ratchakitchanubeksa [Government Gazette], July 22, 1917.
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United Kingdom

United Kingdom’s Four Formal Declarations of War, 1914–15

Between August 4, 1914, and October 15, 1915, the United Kingdom issued four declarations of war, against Germany (Aug. 4, 1914), Austria-Hungary (Aug. 12, 1914), Turkey (Nov. 5, 1914), and Bulgaria (Oct. 15, 1915). The declarations of war were announced in the London Gazette and began with a notice issued by the Foreign Office, followed by a proclamation from King George V stating that the country was at war and detailing the immediate consequences of the declaration of war, such as limits on trading, providing loans, entering into contracts, etc., with the enemy countries.
When the United Kingdom declared war against Germany in August 1914, the colonies and dominions of the British Empire were automatically also in a state of war. This included Australia, Canada, India, Newfoundland, New Zealand, Southern Rhodesia (Zimbabwe), South Africa, and colonies in the Caribbean, all of which contributed troops to the British war effort.

Declaration of War Against Germany, Aug. 4, 1914

The war against Germany was declared on August 4, 1914, and the declaration was published in the London Gazette on the following day.

Foreign Office, “A State of War,” August 4, 1914, Supplement to the London Gazette no. 28861 (August 5, 1914): 6161,
LCCN: https://lccn.loc.gov/15003600.
Available online at https://www.thegazette.co.uk/London/issue/28861/
supplement/6161
.

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United Kingdom

Declaration of War Against Austria-Hungary, Aug. 12, 1914

The war against Austria-Hungary was declared on August 12, 1914, and the Declaration was published in the London Gazette on the following day.

Foreign Office, Notice of State of War Between Great Britain and Austria-Hungary, August 12, 1914, Supplement to the London Gazette no. 28868 (August 13, 1914): 6375,
LCCN: https://lccn.loc.gov/15003600.
Available online at  https://www.thegazette.co.uk/London/issue/28868/
supplement/6375/data.pdf

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United Kingdom

Declaration of War Against Turkey, Nov. 5, 1914

The war against Turkey was declared on November 5, 1914, and the declaration was published in the London Gazette on the following day. 

Foreign Office, Notice of State of War Between Great Britain and Turkey, November 5, 1914, London Gazette no. 28965 (November 6, 1914): 9011,
LCCN: https://lccn.loc.gov/15003600.
Available online at  https://www.thegazette.co.uk/London/issue/28965/
page/9011
.

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United Kingdom

Declaration of War Against Bulgaria, Oct. 15, 1915

The war against Bulgaria was declared on October 15, 1915, and the declaration was published in the London Gazette on October 16th (Supplement) and 19th, along with a Proclamation extending certain war-related proclamations and orders to the war with Bulgaria.

Foreign Office, Notice of State of War Between Great Britain and Bulgaria, October 15, 1915, London Gazette no. 29333 (October 19, 1915): 10257–58,
LCCN: https://lccn.loc.gov/15003600.
Available online at https://www.thegazette.co.uk/London/issue/29333/
page/10257
.

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Last Updated: 03/17/2017