Wikipedia talk:Selected anniversaries/August 13

Roman Empire - Vertumnalias in honor of Vertumnus
1521 - Tenochtitlan (present day Mexico City) falls to conquistador Hernán Cortés
1704 - War of the Spanish Succession: Battle of Blenheim - English and Austrians victorious over French and Bavarians.
1923 - First major sea-going ship arrives at Gdynia, newly constructed Polish seaport.
1940 - World War II: Battle of Britain begins - The Luftwaffe launches a series of attacks on British fighter bases and radar installations.
1942 - Walt Disney's animated cartoon Bambi premiers.
1960 - Central African Republic declares independence from France
1960 - Chad declares independence from France
1961 - German Democratic Republic closes the border between the eastern and western sectors of Berlin, to frustrate its inhabitants' attempts to escape to the West.