On June 29, 1966, during the Vietnam War, the United States escalated its military campaign against North Vietnam by launching Operation Rolling Thunder.
On this day, American aircraft conducted the first significant bombing raids on Hanoi, the capital of North Vietnam, and the major port city of Haiphong.
This marked a significant intensification of U.S. efforts to weaken the North Vietnamese infrastructure and supply lines.
The raids targeted petroleum storage facilities, which were crucial for the North Vietnamese war effort.