The largest single-seat, single engine combat aircraft in history, the F-105 was notable for its large internal bomb bay and unique swept-forward engine inlets in the wing boots. It was first delivered to the U.S. Air Force in 1960. Known as the “Thud,” the F-105 bore a huge burden throughout the Vietnam War. The supersonic aircraft was a deadly and effective tactical fighter-bomber. The F-105 on display, “Xanadu,” at Volk Field was the last B-model to fly, making its final trip in 1961 to Volk Field from the 466^th Tactical “Fighter Squadron (AF Reserver), Hill AFB, Utah.

There is 1 known Republic F-105 Thunderchief on display in Wisconsin.