Soon after its activation the US Army transferred the squadron to England where it lost a majority of its pilots and planes to the American war effort in North Africa.

During the war the 84th flew missions ranging from bomber escort, ground attack, counter-air, and close air support.

They used their new plane very successfully and on 10 April destroyed 58 aircraft on the ground earning the 84th its second Distinguished Unit Citation.

In April 1945 the 84th flew its last combat mission escorting British bombers on their way to Hitler's "Eagles Nest".

[3] The 84th served as part of the occupation forces until it transferred to the United States in June 1947, where it eventually assumed an air defense mission.

The two-seat trainer version was equipped with dual controls, but carried the same armament as the F-101B and were fully combat-capable.

It participated in live flying exercises as targets for various air divisions and for the McDonnell Douglas F-15 Eagles of the 49th Tactical Fighter Wing.