1st » American Civil War: The Battle of Chancellorsville begins.
2nd » American Civil War: Stonewall Jackson is wounded by friendly fire while returning to camp after reconnoitering during the Battle of Chancellorsville. He succumbs to pneumonia eight days later.
6th » American Civil War: The Battle of Chancellorsville ends with the defeat of the Army of the Potomac by Confederate troops.
10th » American Civil War: Confederate States of America Confederate General Stonewall Jackson Thomas "Stonewall" Jackson dies eight days after he is accidentally Friendly fire shot by his own troops.
14th » American Civil War: The Battle of Jackson, Mississippi e.g Battle of Jackson takes place.
17th » Rosalía de Castro publishes 'Cantares Gallegos', the first book in the Galician language.
18th » American Civil War: The Siege of Vicksburg begins.
21st » American Civil War: The Union Army Battle of Plains Store known as succeeds in closing off the last escape route from Port Hudson, Louisiana, in preparation for the coming Siege of Port Hudson called siege.
21st » Organization of the Seventh-day Adventist Church in Battle Creek, Michigan.
22nd » American Civil War: Siege of Port Hudson Union (American Civil War) known as Union forces begin to lay siege to the Confederate States of America named Confederate-controlled Port Hudson, Louisiana.
27th » American Civil War: First Assault on the Confederate States of America called Confederate works at the Siege of Port Hudson.
Famous Birthdays on May in 1863
10th » Kaarle Krohn, Finnish historian and academic (d. 1933)
15th » Frank Hornby, English businessman and politician, invented Meccano (d. 1936)
17th » Léon Gérin, Canadian lawyer, sociologist, and civil servant (d. 1951)