Shortly thereafter, the Squadron moved to NAS San Diego, California, in defense of the West Coast, which at the time was considered a potential Japanese target.

As the Wing staff grew Headquarters Squadron often split to cover the advance and rear echelons.

The squadron arrived in Tientsin in October 1945, and remained until May 1947, when it moved to Barrigada Heights, Guam, before transferring to MCAS El Toro.

Headquarters Squadron participated in exercises, joint maneuvers, organized reserve training, and other peacetime operations.

The unit deployed to Danang, South Vietnam in July 1965 to support the 1st MAW in Southeast Asia.