The 1 FS provided fully qualified F-15 Eagle pilots for worldwide assignment by conducting formal ground, simulator, and flight training.

While based on Ie Shima the 1 FS launched Thunderbolts against the Japanese, amassing almost 1,200 combat air patrol, bombing, strafing, and escort missions.

The 1st operated out of George Air Force Base, California, until it was again inactivated on 15 March 1959, with Lieutenant Colonel Charles E. "Chuck" Yeager as commander.

[2] On 17 September 1991, the operations and maintenance functions of the 1st joined to form a combined squadron.

Also, members received by-name recognition during the 2003 Headquarters Air Education and Training Command Operational Readiness Inspection.