On July 29 in …
1148 –- The Siege of Damascus ends in a decisive Crusader defeat that will lead to the disintegration of the Second Crusade.
1836 -– The Arc de Triomphe (Triumphal Arch) is inaugurated in the center of the Place de l’Étoile (later to be renamed the Place Charles de Gaulle), at the western end of the Champs-Élysées in Paris. The structure was created to honor those who fought and died for France in the French Revolutionary and the Napoleonic Wars, with the names of all French victories and generals inscribed on its inner and outer surfaces.
1907 –- Sir Robert Baden-Powell sets up the Brownsea Island Scout Camp in Poole Harbour on the south coast of England. The camp will run for eight days, and will be regarded as the foundation of the worldwide Scouting movement.
1921 –- Adolf Hitler becomes leader of the National Socialist German Workers Party, colloquially known as the Nazi Party.
1976 –- In New York City, David Berkowitz (a.k.a. the “Son of Sam”) kills one person and seriously wounds another in the first of a series of attacks.