Estonian War of Independence: The decisive defeat of the Baltische Landeswehr in the Battle of Cēsis; this date is celebrated as Victory Day in Estonia.

The Estonian War of Independence, also known as the War of Freedom in Estonia, was a defensive campaign of the Estonian Army and its allies, most notably the United Kingdom, against the Soviet Russian westward offensive of 1918–1919 and the 1919 aggression of the pro–German Baltische Landeswehr. The campaign was the struggle of the newly established democratic state of Estonia for independence in the aftermath of World War I. It resulted in a victory for Estonia and was concluded in the 1920 Treaty of Tartu.

The Baltic Landwehr or Baltische Landeswehr was the name of the unified armed forces of Couronian and Livonian nobility from 7 December 1918 to 3 July 1919.

The Battle of Cēsis, fought near Cēsis (Wenden) in June 1919, was a decisive battle in the Estonian War of Independence and the Latvian War of Independence. After heavy fighting, an Estonian force moving from the north, supplemented by Latvian units, repelled Baltic German attacks and went on a full counter-attack.

Võidupüha is a public holiday in Estonia which occurs on June 23. The holiday has been celebrated since 1934 and marks the victory of Estonia and neighboring Latvia in the Battle of Cēsis against the Baltische Landeswehr on June 23, 1919.

Estonia, officially the Republic of Estonia, is a country in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Russia. The territory of Estonia consists of the mainland, the larger islands of Saaremaa and Hiiumaa, and over 2,300 other islands and islets on the east coast of the Baltic Sea. Its capital Tallinn and Tartu are the two largest urban areas. The Estonian language is the official language and the first language of the majority of its population of nearly 1.4 million. Estonia is one of the least populous members of the European Union and NATO.