* 1918 – World War I: The Flight over Vienna mission, when a dozen Italian Servizio Aeronautico single-engined military aircraft drop leaflets over the main capital of the Austro-Hungarian Empire, demanding that both Austrian hostilities against Italy be ended, and for Austria to end its alliance with the German Empire.

The first tank versus tank action took place on 24 April 1918 at Second Battle of Villers-Bretonneux, when three British Mark IVs met an advance of three German A7Vs, supported by infantry.

* 1918 – First tank-to-tank combat, at Villers-Bretonneux, France, when three British Mark IVs met three German A7Vs.

The Kingdom of Bulgaria participated in World War I on the side of the Central Powers between 15 October 1915, when the country declared war on Serbia, to 29 September 1918, when the Armistice of Thessalonica was signed.

Currently, the word " Bohemians " is sometimes used when speaking about persons from Bohemia of non-Czech or mixed ethnic origin, especially before the year 1918, when the Kingdom of Bohemia ceased to exist ; also when there is need to distinguish between inhabitants of the western part ( Bohemia proper ) of Czechia, and the eastern ( Moravia ) or the north-eastern part ( Silesia ).

The Czechoslovak Armed Forces were originally formed after 1918, when Czechoslovakia was created from former Austro-Hungarian areas after the defeat of that country in World War I.

Liechtenstein claims restitution for ( which is ten times the size of Liechtenstein ) of land in the Czech Republic confiscated from its princely family in 1918 by the then newly established state of Czechoslovakia, the predecessor of the Czech Republic ; the Czech Republic insists that the power to claim restitution does not go back before February 1948, when the Communists seized power ; Liechtenstein did not diplomatically recognize the Czech Republic until 2009, and the Czech Republic in turn did not diplomatically recognize Liechtenstein.

The party was founded in 1918 when several monarchist parties united.

By March 1918, when the organization came to Moscow, it contained the following sections: against counterrevolution, speculation, non-residents, and information gathering.

For example, the Central Committee voted for or against signing a peace treaty with the Germans between 1917 and 1918 during World War I ; the majority voted in favour of peace when Trotsky backed down in 1918.

** Nazarov was Dictator of the Don Republic ( which before, since its founding on 2 December 1917 at Novocherkassk, had been governed by a Triumvirate including the last pre-Soviet Ataman, Aleksei Maksimovich Kaledin ) from 11 February 1918 till 25 February 1918 when Bolshevik troops ended their existence

These theories were given credence by the fact that when Germany surrendered in November 1918, its armies were still in French and Belgian territory, Berlin remained 450 miles from the nearest front, and the German armies retired from the field of battle in good order.

The title of Emperor of Austria and the associated Empire were both abolished at the end of the First World War in 1918, when German Austria became a republic and the other kingdoms and lands represented in the Imperial Council established their independence or adhesion to other states.

By 1918 the edges of ordinary circular irises were becoming very fuzzy when they were used in American films.

But the United States was already gaining quickly when World War I ( 1914 – 1918 ) caused a devastating interruption in the European film industries.

Parachutes were well-developed by 1918 having previously been used by balloonists, and were adopted by the German flying services during the course of that year ( the famous " Red Baron " was wearing one when he was killed ), but the allied command continued to oppose their use on various grounds.

His Democratic opponent was Robert L. Moran, an alderman from the Bronx who had succeeded to the Board presidency in 1918 when Alfred E. Smith, who had been elected Board President in 1917, became Governor.

The final blow to the cause of the Finnish Reds was dealt when the Bolsheviks broke off the peace negotiations at Brest-Litovsk, leading to the German eastern offensive in February 1918.

The German Empire () is the common name given to the state officially named the ( literally: " German Realm "), designating Germany from the unification of Germany and proclamation of Wilhelm I as German Emperor on 18 January 1871, to 1918, when it became a federal republic after defeat in World War I and the abdication of the Emperor, Wilhelm II.

This new puppet state existed until November 1918, when it was replaced by the newly established Republic of Poland.

* 1918 – Theodore Sturgeon, American writer ( d. 1985 )

* 1897 – Quentin Roosevelt, son of United States President Theodore Roosevelt ( d. 1918 )

Theodore Samuel " Ted " Williams ( August 30, 1918 – July 5, 2002 ) was an American professional baseball player and manager.

Former President Theodore Roosevelt had been the frontrunner for the Republican nomination, but his health collapsed in 1918.

The British Board of Trade appointed a committee in 1918 which approved proposals by Theodore Stevens and published a report in 1922.

George von Lengerke Meyer ( June 24, 1858 – March 9, 1918 ) was a Massachusetts businessman and politician who served in the Massachusetts House of Representatives, as United States ambassador to Italy and Russia, as United States Postmaster General from 1907 to 1909 during the administration of President Theodore Roosevelt and United States Secretary of the Navy from 1909 to 1913 during the administration of President William Howard Taft.

Quentin Theodore Roosevelt ( November 19, 1897 – July 14, 1918 ) was the youngest and favorite son of President Theodore Roosevelt.

In June 2007, several Roosevelt family members as well as members of the Theodore Roosevelt Association ( TRA ) visited the small monument in France at the French village over which Quentin was shot down in 1918.

* Theodore Roosevelt was a steamer built in 1906, acquired by the Navy from the Roosevelt Steamship Company sometime in 1918 and fitted out as a troop transport.

Theodore Bayley Hardy VC, DSO, MC ( 20 October 1863 – 18 October 1918 ) was a Chaplain in the British Army and English recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces.

In November 1918, they capture the House of Representatives for the first time, disrupting Theodore Roosevelt's plans for domestic and foreign affairs.

* Hieromartyrs Alexander ( Smirnov ), and Theodore ( Remezov ), Priests ( 1918 )

Theodore Judson Jemison ( born 1918 ), better known as T. J. Jemison, is the former president of the National Baptist Convention, having served from 1982 to 1994.

The doctrine is named for two early twentieth-century United States Supreme Court cases, Hanover Star Milling Co. v. Metcalf, 240 U. S. 403 ( 1916 ) ( the " Tea Rose " case ), and United Drug Co. v. Theodore Rectanus Co., 248 U. S. 90 ( 1918 ).

Theodore William John Schurch ( 5 May 1918 – 4 January 1946 ) was a British soldier of Anglo-Swiss parentage who was executed under the Treachery Act 1940 following the end of the Second World War.

* 1918 – Quentin Roosevelt, American aviator ( b. 1897 )

Roosevelt was popular enough to seriously contest the 1920 Republican nomination, but his health was broken by 1918, because of the lingering malaria.

In Philadelphia, Roosevelt Boulevard, also known as U. S. 1, was named in his honor in 1918.

Her family moved from Butte, Montana, to the north slope of Seattle's Capitol Hill neighborhood in 1918, moving to the Laurelhurst neighborhood a year later and finally settling in the Roosevelt neighborhood in 1922, where she graduated from Roosevelt High School in 1924.

The rising popularity of automobiles led to widening of roads and creation of Northeast ( Roosevelt ) Boulevard in 1914, the Benjamin Franklin Parkway in 1918, the changing of many existing streets to one-way streets in the early 1920s, and construction of the Delaware River ( Benjamin Franklin ) Bridge to New Jersey in 1926.

* Joseph Willard Roosevelt ( 1918 – 2008 )

When the United States joined the war, Roosevelt was transferred to the AEF in Europe, relinquishing his British commission on 28 April 1918.

Though reportedly possessing poor distance vision, Roosevelt nevertheless claimed a German fighter shot down out of control on July 10, 1918.

On September 24, 1918, the Army changed the name of the airfield to Roosevelt Field.

The couple spent most of their married life in a pre-Revolutionary house on Turkey Lane in Cold Spring Harbor, New York, not far from Oyster Bay, where they raised four children: Archibald Bulloch Roosevelt, Jr. ( 1918 – 1990 ), Theodora Roosevelt ( 1919 – 2008 ), Nancy Dabney Roosevelt ( 1923 – 2010 ) and Edith Kermit Roosevelt ( 1926 – 2003 ).