March 21st in History
1918: Offensive on the Somme begins, the last major offensive of World War I
1963: Alcatraz, maximum security prison on the island in San Francisco Bay, closes after 29 years
March 21st birthdays
1685: Johann Sebastian Bach, German composer
1869: Florenz Ziegfield, American impresario
1946: Timothy Dalton, English actor
1963: Matthew Broderick, American actor