The Shortest War in History Lasted Just 38 Minutes
The Anglo-Zanzibar War of August 27, 1896 began at 9:02 AM and ended in surrender by 9:40 AM.
Why / How?
Following a succession dispute, British warships bombarded the Sultan's palace after an ultimatum expired. Zanzibar lowered its flag in under three-quarters of an hour—shorter than a single school class.