- 202 BC Coronation ceremony of Liu Bang as Emperor Gaozu of Han takes place, initiating four centuries of the Han Dynasty's rule over China
- 1710 In the Battle of Helsingborg, 14,000 Danish invaders under Jørgen Rantzau are decisively defeated by an equally sized Swedish force under Magnus Stenbock
- 1854 Republican Party formally organized in Ripon, Wisconsin
- 1915 WWI: After the French try to drive the Germans forces back into the Champagne region, they gain a few hundred yards - at the cost of 50,000 casualties
- 1947 February 28 Incident: Anti-government uprising in Taiwan is violently put down by Chiang Kai-shek and his Kuomintang-led Republic of China government with the loss of 18,000-28,000 lives. Marks the beginning of the White Terror.
- 1953 Francis Crick and James Watson discover the chemical structure of DNA-molecule (double-helix polymer)
- 1991 Gulf War ends after Iraq accepts a ceasefire following their retreat from Kuwait
The erroneous word "Dord" is discovered in the Webster's New International Dictionary, Second Edition, prompting an investigation.
On February 28, 1939
The brains of two rats successfully connected so that they share information
On February 28, 2013