8th January » President Woodrow Wilson announces his "Fourteen Points" for the aftermath of World War I.
9th January » Battle of Bear Valley: The last battle of the American Indian Wars.
17th January » Finnish Civil War: The first serious battles take place between the Red Guards (Finland) known as Red Guards and the White Guard (Finland) called White Guard.
25th January » Ukraine declares independence from Bolshevik Russia.
28th January » Finnish Civil War: Rebellion e.g Rebels seize control of the capital, Helsinki, and members of the Senate of Finland go underground.
29th January » Ukrainian–Soviet War: The Bolshevik Red Army, on its way to besiege Kiev, is met by a small group of military students at the Battle of Kruty.
29th January » Ukrainian–Soviet War: An Kiev Arsenal January Uprising or armed uprising organized by the Bolsheviks in anticipation of the encroaching Red Army begins at the Kiev Arsenal, which will be put down six days later.
31st January » A Battle of May Island named series of accidental collisions on a misty Scottish night leads to the loss of two Royal Navy submarines with over a hundred lives, and damage to another five British warships.
1st February » Russia adopts the Gregorian Calendar.
3rd February » The Twin Peaks Tunnel in San Francisco, California begins service as the longest streetcar tunnel in the world at 11,920 feet (3,633 meters) long.
5th February » Stephen W. Thompson shoots down a German airplane. It is the first aerial victory by the U.S. military.
5th February » SS Tuscania 1914 6 is torpedoed off the coast of Ireland; it is the first ship carrying American troops to Europe to be torpedoed and sunk.
14th February » The Soviet Union adopts the Gregorian calendar (on 1 February according to the Julian calendar).
16th February » The Council of Lithuania unanimously adopts the Act of Independence of Lithuania named Act of Independence, declaring Lithuania an independent state.
21st February » The last Carolina Parakeet dies in captivity at the Cincinnati Zoo.
23rd February » Last monarch of Mecklenburg-Strelitz commits suicide.
24th February » Estonian Declaration of Independence.
4th March » The USS Cyclops AC-4 6 departs from Barbados and is never seen again, presumably lost with all hands in the Bermuda Triangle.
11th March » The first case of 1918 flu pandemic known as Spanish flu occurs, the start of a devastating worldwide pandemic.
12th March » Moscow becomes the capital of Russia again after Saint Petersburg held this status for 215 years.
19th March » The Congress of the United States known as U.S. Congress establishes time zones and approves daylight saving time.
21st March » World War I: The first phase of the German Spring Offensive, Operation Michael, begins.
23rd March » First World War: On the third day of the German Operation Michael known as Spring Offensive, the 10th Battalion of the Royal West Kent Regiment is annihilated with many of the men becoming Prisoners of war
27th March » Bessarabia is ceded to the Kingdom of Romania.
30th March » Outburst of bloody March Days e.g March Events in Baku and other locations of Baku Governorate.
31st March » March Days named Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed.
31st March » Daylight saving time goes into effect in the United States for the first time.
1st April » The Royal Air Force is created by the merger of the Royal Flying Corps and the Royal Naval Air Service.
9th April » World War I: The Battle of the Lys (1918) named Battle of the Lys the Portuguese Expeditionary Corps is crushed by the German forces during what is called the Spring Offensive on the Belgian region of Flanders.
9th April » The National Council of Bessarabia proclaims Union of Bessarabia with Romania or union with the Kingdom of Romania.
20th April » Manfred von Richthofen, aka The Red Baron, shoots down his 79th and 80th victims, his final victories before his death the following day.
21st April » World War I: German Empire called German fighter ace Manfred von Richthofen, better known as "The Red Baron", is shot down and killed over Vaux-sur-Somme in French Third Republic e.g France.
23rd April » World War I: The Royal Navy British Royal Navy makes a Zeebrugge Raid raid in an attempt to neutralise the Belgium Belgian port of Bruges-Zeebrugge.
24th April » First tank-to-tank combat, at Villers-Bretonneux, France, when three British Mark IV tank called Mark IVs meet three Germany or German A7Vs.
2nd May » General Motors Corporation named General Motors acquires the Chevrolet Motor Company of Delaware.
11th May » The Mountainous Republic of the Northern Caucasus is officially established.
16th May » The Sedition Act of 1918 is passed by the U.S. Congress, making criticism of the government during wartime an imprisonable offense. It will be repealed less than two years later.
26th May » The Democratic Republic of Georgia is established.
28th May » The Azerbaijan Democratic Republic and the First Republic of Armenia declare their independence.
29th May » Armenia defeats the Military of the Ottoman Empire known as Ottoman Army in the Battle of Sardarabad.
1st June » World War I, Western Front (World War I) called Western Front: Battle for Belleau Wood Allied Forces under John J. Pershing and James Harbord engage Imperial German Forces under Wilhelm, German Crown Prince.
10th June » The Austro-Hungarian Navy Austro-Hungarian battleship Ship SMS Szent István sinks off the Croatian coast after being torpedoed by an Kingdom of Italy Italian MAS (ships) MAS motorboat; the event is recorded by camera from a nearby vessel.
22nd June » The Hammond Circus Train Wreck kills 86 and injures 127 near Hammond, Indiana.
24th June » First airmail service in Canada from Montreal to Toronto.
26th June » World War I, Eastern Front (World War I) named Western Front: Battle for Belleau Wood Allied Forces under John J. Pershing and James Harbord defeat Imperial German Forces under Wilhelm, German Crown Prince.
4th July » Ottoman sultan Mehmed VI ascended to the throne.
4th July » World War I: The Battle of Hamel, a successful attack by the Australian Corps against German positions near the town of Le Hamel, Somme called Le Hamel on the Western Front (World War I) e.g Western Front.
4th July » Bolsheviks killed Tsar Nicholas II of Russia and his family (Julian calendar date).
9th July » Great Train Wreck of 1918: In Nashville, Tennessee, an inbound local train collides with an outbound express killing 101 and injuring 171 people, making it the deadliest Train wreck e.g rail accident in United States history.
12th July » The Imperial Japanese Navy battleship 'Japanese battleship Kawachi or Kawachi' blows up at Yamaguchi Prefecture known as Shunan, western Honshu, Japan, killing at least 621.
15th July » World War I: The Second Battle of the Marne begins near the Marne (river) known as River Marne with a Germany or German attack.
17th July » Nicholas II of Russia Tsar Nicholas II of Russian Empire Russia and his immediate family and retainers Shooting of the Romanov family are murdered by Bolshevik Cheka Chekists at the Ipatiev House in Yekaterinburg, Russian Soviet Federative Socialist Repub
17th July » The RMS Carpathia, the ship that rescued the 705 survivors from the RMS Titanic, is sunk off Ireland by the German SMU U-55; five lives are lost.
21st July » SMU U-156 2 shells Attack on Orleans Nauset Beach, in Orleans, Massachusetts.
2nd August » Japan announces that it is deploying troops to Siberia in the aftermath of World War I.
2nd August » The first general strike in Canadian history 1918 Vancouver general strike known as takes place in Vancouver.
8th August » World War I: The Battle of Amiens (1918) called Battle of Amiens begins a string of almost continuous victories with a push through the Germany named German front lines (Hundred Days Offensive).
11th August » World War I: The Battle of Amiens (1918) known as Battle of Amiens ends.
13th August » Women enlist in the United States Marine Corps for the first time. Opha Mae Johnson is the first woman to enlist.
13th August » Bayerische Motoren Werke AG (BMW) History of BMW BMW GmbH goes public or established as a public company in Germany.
17th August » Bolshevik revolutionary leader Moisei Uritsky is assassination known as assassinated.
21st August » World War I: The Second Battle of the Somme (1918) or Second Battle of the Somme begins.
27th August » Mexican Revolution: Battle of Ambos Nogales: United States Army U.S. Army forces skirmish against Mexican Carrancistas and their German Empire German military advisor advisors in the only battle of World War I fought on American soil.
29th August » Bapaume taken by the New Zealand Division in the Hundred Days Offensive.
30th August » Fanni Kaplan shoots and seriously injures Bolshevik leader Vladimir Lenin. This, along with the assassination of Bolshevik senior official Moisei Uritsky days earlier, prompts the decree for Red Terror.
31st August » World War I: Start of the Battle of Mont Saint-Quentin, a successful assault by the Australian Corps during the Hundred Days Offensive.
5th September » The original publication of the Cheka decree, "On Red Terror".
10th September » Russian Civil War: The Red Army Kazan Operation named captures Kazan.
26th September » World War I: The Meuse-Argonne Offensive, the bloodiest single battle in American history, begins.
28th September » World War I: The Fifth Battle of Ypres begins.
29th September » World War I, Battle of St. Quentin Canal: The Hindenburg Line is broken by Allies of World War I or Allied forces. Bulgaria signs an armistice.
1st October » World War I: Arab forces under T. E. Lawrence, also known as "Lawrence of Arabia", capture Damascus.
3rd October » King Boris III of Bulgaria accedes to the throne.
4th October » An explosion kills more than 100 and destroys the T. A. Gillespie Company Shell Loading Plant explosion e.g T.A. Gillespie Company Shell Loading Plant in Sayreville, New Jersey. Fires and explosions continue for three days forcing massive evacuations and
8th October » World War I: In the Forest of Argonne e.g Argonne Forest in France, United States Corporal Alvin C. York kills 28 German Empire known as German soldiers and captures 132, for which he is awarded the Medal of Honor.
11th October » 1918 San Fermín earthquake e.g San Fermín earthquake hits western Puerto Rico.
12th October » A 1918 Cloquet Fire e.g massive forest fire kills 453 people in Minnesota.
13th October » Mehmed Talat Pasha and the Young Turk (C.U.P.) ministry resign and sign an armistice, ending Ottoman Empire or Ottoman participation in World War I.
26th October » Erich Ludendorff, quartermaster-general of the German Army (German Empire) called Imperial German Army, is dismissed by Kaiser William II, German Emperor known as Wilhelm II of Germany for refusing to cooperate in peace negotiations.
28th October » World War I: Czechoslovakia is granted independence from Austria-Hungary marking the beginning of an independent Czechoslovak state, after 300 years.
28th October » A new Polish government in Western Galicia (Central Europe) known as Galicia is established.
29th October » The German Empire or German High Seas Fleet is incapacitated when sailors Wilhelmshaven mutiny or mutiny on the night of the 29th-30th, an action which would trigger the German Revolution of 1918–19.
30th October » The Ottoman Empire signs an armistice with the Allies of World War I named Allies, ending the World War I e.g First World War in the Middle East.
31st October » World War I: Dissolution of the Austria-Hungary called Austro-Hungarian Empire.
1st November » Malbone Street Wreck: the worst rapid transit accident in US history occurs under the intersection of Malbone Street and Flatbush Avenue, Brooklyn, New York City, with at least 102 deaths.
1st November » Western Ukraine gains its independence from the Austro-Hungarian Empire.
1st November » The short-lived Banat Republic is founded.
3rd November » Austria-Hungary enters into an armistice with the Allies of World War I called Allies, and the Habsburg-ruled empire dissolves.
3rd November » Poland declares its independence from Russia.
3rd November » The German Revolution of 1918–1919 begins when 40,000 sailors Kiel mutiny known as take over the port in Kiel.
4th November » World War I: Austria-Hungary surrenders to Italy.
6th November » The Second Polish Republic is proclaimed.
7th November » The 1918 influenza epidemic spreads to Western Samoa, killing 7,542 (about 20% of the population) by the end of the year.
7th November » Kurt Eisner overthrows the Wittelsbach dynasty in the Kingdom of Bavaria.
9th November » Kaiser Wilhelm II, German Emperor or Wilhelm II of Germany abdicates after the German Revolution of 1918–1919 or German Revolution, and Germany is proclaimed a Republic.
10th November » The Western Union Cable Office in North Sydney, Nova Scotia, receives a top-secret coded message from Europe (that would be sent to Ottawa, Ontario, and Washington, DC) that said on November 11, 1918, all fighting would cease on land, sea and in the air.
11th November » World War I: Germany signs an Armistice with Germany (Compiègne) called armistice agreement with Allies of World War I e.g the Allies in a railroad car in the forest of Compiègne, France. The fighting officially ends at 11:00 a.m., (the eleventh hour of t
11th November » Józef Piłsudski assumes supreme military power in Poland - symbolic first day of Polish Independence Day called Polish independence.
11th November » Emperor Charles I of Austria relinquishes power.
12th November » Austria becomes a First Austrian Republic called republic.
13th November » Allies of World War I or Allied troops occupy Occupation of Constantinople named Constantinople, the capital of the Ottoman Empire.
18th November » Latvia declares its independence from Russia.
21st November » Flag of Estonia, previously used by pro-independence activists, is formally adopted as national flag of the Republic of Estonia.
21st November » Lwów pogrom (1918) known as A pogrom takes place in Lwów (now Lviv); over three days, at least 50 Jews and 270 Ukrainian Christians are killed by Poles.
23rd November » Heber J. Grant succeeds Joseph F. Smith as the seventh President of the Church (LDS Church) known as president of The Church of Jesus Christ of Latter-day Saints.
25th November » Vojvodina, formerly Austria–Hungary called Austro-Hungarian crown land, proclaims its secession from Austria–Hungary to join the Kingdom of Serbia.
26th November » The Montenegran Podgorica Assembly votes for a "union of the people", declaring assimilation into the Kingdom of Serbia.
28th November » Bukovina votes for union with the Kingdom of Romania.
1st December » Transylvania unites with the Kingdom of Romania, following the incorporation of Bessarabia (March 27) and Bukovina (November 28), thus concluding the Union of Transylvania with Romania e.g Great Union.
1st December » The Kingdom of Iceland becomes a sovereign state, yet remains a part of the Danish kingdom.
1st December » The Kingdom of Serbs, Croats and Slovenes (later known as the Kingdom of Yugoslavia) is proclaimed.
4th December » President of the United States or U.S. President Woodrow Wilson sails for the World War I peace talks in Palace of Versailles named Versailles, becoming the first US president to travel to Europe while in office.
12th December » The Flag of Estonia is raised atop the Pikk Hermann for the first time.
14th December » Prince Frederick Charles of Hesse known as Friedrich Karl von Hessen, a German prince elected by the Parliament of Finland to become King Väinö I, renounces the List of monarchs of Finland called Finnish throne.
14th December » President of Portugal e.g Portuguese President Sidónio Pais is assassinated.
17th December » Darwin Rebellion: Up to 1,000 demonstrators march on Government House, Darwin called Government House in Darwin, Northern Territory, Australia.
27th December » The Greater Poland Uprising (1918–1919) or Great Poland Uprising against the Germany called Germans begins.
28th December » Constance Markievicz, while detained in Holloway prison, became the first woman to be elected Member of Parliament United Kingdom named MP to the House of Commons of the United Kingdom known as British House of Commons.