- 1809 Peninsular War: France defeats Spain in the Battle of Medelin.
- 1854 Britain & France declare war on Russia (Crimean War)
- 1860 First Taranaki War: The Battle of Waireka begins (New Zealand).
- 1922 1st microfilm device introduced
- 1946 Cold War: The United States State Department releases the Acheson-Lilienthal Report, outlining a plan for the international control of nuclear power.
- 1985 STS 51-D vehicle moves to launch pad
28th March in History