Wikipedia:Selected anniversaries/July 21
July 21: The National holiday of Belgium
- 1298 - Edward I of England defeated William Wallace's Scottish rebels at the Battle of Falkirk.
- 1861 - The First Battle of Bull Run began, marking the first major battle of the American Civil War.
- 1970 - Aswan High Dam in Egypt was completed after 11 years of construction.
- 1995 - The Chinese People's Liberation Army began firing missiles into the waters north of Taiwan, starting the Third Taiwan Strait Crisis.
- 1997 - The fully restored USS Constitution (aka "Old Ironsides") celebrated her 200th birthday by setting sail for the first time in 116 years.