Historical Events on September 3

Vlora War — 1920 conflict between Italy and Albania

Western Front — military theatre of World War II encompassing Denmark, Norway, Luxembourg, Belgium, the Netherlands, the United Kingdom, France, Italy, and Germany

Bloody Sunday — Bydgoszcz, 3 September 1939

Armistice of Cassibile — armistice between the Kingdom of Italy and the Allies of World War II

1950 Italian Grand Prix — Formula One motor race held in 1950

First Taiwan Strait Crisis — 1954–1955 conflict between the Republic of China and the People's Republic of China

water polo at the 1960 Summer Olympics — Water polo at the Olympics

Dagen H — Day in Sweden when the change from left-hand traffic to right-hand traffic occurred