April 25, 1862: Capture of New Orleans LA by the Union under Flag Officer Farragut.
April 26, 1564: William Shakespeare is baptized in Stratford-upon-Avon, Warwickshire, England.
April 27, 1943: Polish Resistance Fighter Witold Pilecki escapes from Auschwitz after having voluntarily been imprisoned there to gain information about the Holocaust.
April 28, 1789: Fletcher Christian leads a mutiny on HMS Bounty against its Captain William Bligh in the South Pacific.
April 29, 1975: Vietnam War: US begins to evacuate its citizens from Saigon in Operation Frequent Wind in response to advancing North Vietnamese forces, bringing an end to US involvement in the war.
April 30, 1803: Chancellor Robert Livingston and James Monroe sign Louisiana Purchase Treaty in Paris at a cost of 15 million dollars, doubles the size of the USA.
May 1, 1923: Adolf Hitler and Ernst Rohm attempt to break up socialist May Day demonstrates, inviting Nazis from as far away as Nuremberg to take part in the violence.