The "First Battle of Sfetigrad" began, one of the longest and most heroic battles fought by the Albanian army, commanded by Skanderbeg, against the Ottoman army led by Sultan Murad II himself. It took place from May 14 until the end of July. On May 14, the Ottoman vanguard reached Lower Dibra and surrounded Sfetigrad.
The "First Siege of Krujë" began, an operation undertaken by the Ottoman army with the aim of capturing Krujë, the main political-military center of Albanian resistance, and subsequently conquering the entire Albania in a short period.
The "Warsaw Treaty", a political-military alliance between the Soviet Union, Czechoslovakia, the German Democratic Republic, Bulgaria, Hungary, Poland, Romania and Albania, was signed in Warsaw, Poland, with a term of 20 years.
The "Zahaq Massacre" took place, a massacre by the Serbian police and army against the Albanian civilian population in the village of Zahaq in the municipality of Peja.