Operation Linebacker II operations were initiated on 18 December 1972 and were directed by the Joint Chiefs of Staff (JCS) to continue until further notice. The primary objective of the bombing operation would be to force the North Vietnamese government to enter into purposeful negotiations concerning a cease-fire agreement. The operation employed air power to its maximum capabilities in an attempt to destroy all major target complexes such as radio stations, railroads, power plants, and airfields located in the Hanoi and Haiphong areas. Unlike previous bombing campaigns, Linebacker II provided the Air Force and U.S. Naval forces with specific objectives and removed many of the restrictions that had previously caused frustration within the Pentagon.
During these operations, Air Force and Navy tactical aircraft and B-52s commenced an around-the-clock bombardment of the North Vietnamese heartland. The B-52s struck Hanoi and Haiphong during hours of darkness with F-111s and Navy tactical aircraft providing diversionary/suppression strikes on airfields and surface-to-air missile sites. Daylight operations were primarily carried out by A-7s and F-4s bombing visually or with long-range navigation (LORAN) techniques, depending upon the weather over the targets. In addition, escort aircraft such as the Air Force EB-66s and Navy EA-6s broadcast electronic jamming signals to confuse the radar-controlled defenses of the North. The Strategic Air Command also provided KC-135s to support the in-flight refueling requirements of the various aircraft participating in Linebacker II operations.
