The F-105 was a supersonic fighter-bomber used by the USAF to great extent during the Vietnam War (1955-1975). Despite pilots' initial apprehensions about the aircraft and a variety of problems with early designs, these planes ultimately became the primary strike bomber over North Vietnam in the early stages of the Vietnam War. This book explores the crucial importance of the Thunderchief, deemed the "Thud" by many of its crews, in the Rolling Thunder campaign; it explains the pioneering suppression of enemy air defences (SEAD) methods developed by the F-105 'Wild Weasel' crews. Using first-hand narratives wherever possible, the text captures the essence of flying the "Thud" against heavy AAA, SAM and MiG defences in conditions where constricting Rules of Engagement made the pilots' task virtually impossible at times. The book also documents the other demanding missions flown over Laos and South Vietnam. The author also gives an extensive overview of the aircraft's strengths and difficulties, the development of wartime tactics and the heroic accomplishments of a selection of its aircrew.