1944 was a leap year.
January 27 - The Saint Sava Congress ended in the village of Ba, which was a kind of response of the Chetnik movement to the Second Session of AVNOJ.
March 19 - German troops occupy Hungary to prevent it from joining the Allies.
April 8 - May 12 - Crimean Offensive
April 16 - Allied aviation bombs Belgrade in World War II.
April 22 - The First Airborne Squadron of the NOVJ is formed at the Benin Airport near Benghazi in Libya in the Second World War.
May 11 - Allies launch a major offensive against Axis forces on the Gustav Line.
May 18 - More than 200,000 Tatars are expelled from Crimea in the Soviet Union on charges of collaborating with the Germans.
May 25 - In World War II, the Germans begin an air raid on Drvar, where the Supreme Headquarters of the Yugoslav Partisans was located.
June 4 - Allied troops enter Rome during World War II.
June 6 - Allied forces land in Normandy in World War II on the largest landing in history.
June 10 - June 14 - Battle of Quarantine
June 13 - German forces launch a counterattack on US forces near Carantan.
June 13 - German forces stop the British advance in the Battle of Vier-Bocage.
June 13 - First German V-1 missiles are fired in southern England in World War II.
June 14 - In the Second World War, the Tito-Šubašić Agreement on the relations between the People's Liberation Movement and the Government of Yugoslavia in exile was concluded during the Second World War.
June 17 - Iceland becomes an independent republic after its people decide to secede from Denmark in a referendum.
June 20 - The defeat of the Japanese fleet ends the naval battle in the Philippine Sea in World War II.
June 22 - The Soviet Union launches Operation Bagration against the German Army Group Center.
July 3 - Soviet troops liberate the Belarusian capital, Minsk, during World War II and capture 100,000 German soldiers.
July 20 - German Colonel Klaus von Stauffenberg assassinates Adolf Hitler.
August 1 - The Warsaw Uprising begins, partisan units invade Serbia.
August 25 - The forces of Free France and the Resistance Movement liberate Paris in the Second World War