July 15

• July 15, 1099
  Jerusalem falls to the crusaders after a seven weeks of siege ending First Crusade and following a massacre of the city's Muslim and Jewish population with the dead numbered about 3,000
• July 15, 1410
  Lithuanian-Polish forces defeat the Teutonic Knights at the Battle of Grunwald in Prussia, thereby halting the Knights' eastward expansion along the Baltic and hastening their decline
• July 15, 1606
  The painter Rembrandt Harmenszoon van Rijn, is born in Leiden, Netherlands
• July 15, 1662
  A Royal Charter, which created the Royal Society of London with Lord Brouncker serving as the first President, is signed
• July 15, 1685
  James Scott, the Duke of Monmouth and illegitimate son of Charles II, is executed on Tower Hill in England, after his army was defeated at Sedgemoor
• July 15, 1741
  Georg Wilhelm Steller, a German botanist in Russian exploratory mission under Vitus Bering, claims to see the Alaska, American mainland and becomes a pioneer of Alaskan natural history
• July 15, 1788
  Louis XVI jails 12 deputies who protest new judicial reforms
• July 15, 1834
  Spanish Inquisition is officially abolished by a Royal Decree signed by regent Maria Christina of the Two Sicilies
• July 15, 1857
  British women and children are murdered by Indian mutineers in the second Cawnpore Massacre
• July 15, 1895
  Stefan Stambolov, ex-prime minister of Bulgaria, is murdered by Macedonian rebels
• July 15, 1918
  Second Battle of the Marne, the last major German Spring Offensive on the Western Front, begins
• July 15, 1974
  TV news anchor Chris Chubbuck shoots herself in the head with a revolver on live TV, dying 14 hours later, at age 30
• July 15, 2007
  In Tacoma, Washington, USA, the second span of the Tacoma Narrows Bridge opens to traffic, making it the longest twin suspension bridge in the world