Hungarian-Romanian War
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Was a war between Romania and Hungary over territorial disputes after the dissolution of Austria-Hungary at the end of World War I.
Chronology
Interactive Chronologies with maps are available in the section Changes Navigation
At the beginning of the Hungarian-Romanian War Romanian troops occupied Transylvania, a territory promised to Romania by the Entente in the Treaty of Bucharest (1916).
November 1918: The first Romanian troops enter Hungary and occupy the Gyergyótölgyes mountain pass accessing the Székely Land Region.
December 1918: The Union of Transylvania with Romania was officiated by the elected representatives of the Romanian people of Transylvania, who proclaimed a union with Romania.
December 1918: The Romanian Army enters Brașov, in southeastern Transylvania.
January 1919: Romanian troops reached Baia Mare.
January 1919: The Romanian Army enters Sighetu Marmației.
April 1919: The Romanian Army entered Oradea (Nagyvárad) and Salonta (Nagyszalonta).
December 1918: Romanian troops enter Cluj (Kolozsvár).
December 1918: Romanian troops enter Nagyszeben (Sibiu) in southern Transylvania.
April 1919: Romanian troops enter Carei (Nagykároly) and Satu Mare (Szatmárnémeti).
November 1918: The Romanian Army occupied Marosvásárhely (Târgu-Mureș).
January 1919: Romanian troops now control the entire territory up to the new demarcation line indicated by the Entente powers. Inner Transylvania and Maramureș are under Romanian control, leaving Banat under Serbian, and Crișana under Hungarian control.
Was a Romanian military invasion of Hungary after Romania had already occupied Transylvania.
May 1919: The Romanian Army reaches the river Tisza.
May 1919: Romanian army units enter Arad.
August 1919: Romania occupied all of Hungary with the exception of an area around Lake Balaton.
January 1920: In early 1920, Romanian troops departed Hungary. All of Hungary but a region around Lake Balaton was evacuated.
August 1919: French-supported Romanian forces entered Budapest. The Communist government of Hungary collapsed and its leaders flee.
Was the Hungarian counteroffensive against Romanian troops that had invaded the country during the Hungarian-Romanian War.
July 1919: Hungary invaded Romanian border regions after the Tisza river.
July 1919: Mindszent and Törökszentmiklós reconquered by Romania.
The border between Romania and Hungary after World War I was decided in the The Treaty of Saint-Germain-en-Laye (1919).
September 1919: The Treaty of Saint-Germain-en-Laye is signed, recognizing Romanian sovereignty over Bukovina but the frontiers of Romania was to be later fixed.
September 1919: The Treaty of St. Germain established the borders of the Czechoslovak Republic.
September 1919: The Treaty of St. Germain established the borders of the Kingdom of Romania with Poland.
