July 29, 1921 – Adolph Hitler becomes leader of the National Socialist German Workers Party (German:  Nationalsozialistische Deutsche Arbeiterpartei or NSDAP) more commonly known as the Nazi Party.

July 29, 1967 – USS Forrestal:  An electronic malfunction aboard an F-4 Phantom II launches a 5-inch Zuni Rocket which flies across the flight deck, striking an external fuel tank on an A-4 Skyhawk piloted by future US Senator and Presidential candidate LCDR John McCain.  The resulting jet fuel fire and explosions caused by bombs and other munitions “cooking off” in the intense heat caused the deaths of 134 Forrestal crewmen and left 161 more injured.  Twenty one aircraft were damaged beyond repair including 7 F-4 Phantom IIs, 11 A-4E Skyhawks, and 3 RA-5 Vigilantes.  At the time, this event was considered the worst US naval disaster since World War II.