WHAT ALL HAPPENED JANUARY TO JUNE 1918
Find out what all happened January to June 1918

The National Council of Bessarabia proclaims union with the Kingdom of Romania. (9. April 1918)

The Mountainous Republic of the Northern Caucasus is officially established. (11. May 1918)

The Soviet Union adopts the Gregorian calendar (on 1 February according to the Julian calendar). (14. February 1918)

The USS Cyclops departs from Barbados and is never seen again, presumably lost with all hands in the Bermuda Triangle. (4. March 1918)

The Council of Lithuania unanimously adopts the Act of Independence, declaring Lithuania an independent state. (16. February 1918)

Germany, Austria and Russia sign the Treaty of Brest-Litovsk ending Russia's involvement in World War I, and leading to the independence of Finland, Estonia, Latvia, Lithuania and Poland. (3. March 1918)

World War I: The 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. (9. April 1918)

Estonian Declaration of Independence. (24. February 1918)

Stephen W. Thompson shoots down a German airplane. It is the first aerial victory by the U.S. military. (5. February 1918)

First World War: On the third day of the German Spring Offensive, the 10th Battalion of the Royal West Kent Regiment is annihilated with many of the men becoming Prisoners of war (23. March 1918)

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 It will be repealed less than two years later. (16. May 1918)

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. (3. February 1918)

The first case of Spanish flu occurs, the start of a devastating worldwide pandemic. (11. March 1918)

Last monarch of Mecklenburg-Strelitz commits suicide. (23. February 1918)

Russia adopts the Gregorian Calendar. (1. February 1918)

SS Tuscania is torpedoed off the coast of Ireland; it is the first ship carrying American troops to Europe to be torpedoed and sunk. (5. February 1918)

World War I: The first phase of the German Spring Offensive, Operation Michael, begins. (21. March 1918)

Bessarabia joins the Kingdom of Romania. (27. March 1918)

The last Carolina Parakeet dies in captivity at the Cincinnati Zoo. (21. February 1918)

A 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. (31. January 1918)