April 26 Lorenzo de' Medici 1478 – In a conspiracy to replace the Medici family as rulers of the Republic of Florence, the Pazzi family attacked Lorenzo de' Medici (pictured) and killed his brother Giuliano at Florence Cathedral. 1915 – First World War: Britain, France and Russia signed a secret treaty promising territory to Italy if it joined the war on their side. 1933 – The Gestapo, the official secret police force of Nazi Germany, was established. 1989 – A tornado struck the Manikganj District of Bangladesh and killed an estimated 1,300 people, making it the deadliest tornado in history. 1994 – Just before landing at Nagoya Airport, Japan, the copilot of China Airlines Flight 140 inadvertently triggered the takeoff/go-around switch, causing the aircraft to crash and killing 264 of the 271 people on board. Marcus Aurelius (b. 121)Alice Ayres (d. 1885)S. J. V. Chelvanayakam (d. 1977) More anniversaries: April 25 April 26 April 27 Archive By email List of days of the year About