On 2 December 1948, the Air Force directed the Army Corps of Engineers to proceed with construction of this and the other twenty-three sites.

The 654th Aircraft Control and Warning Squadron was assigned to Brunswick on 1 January 1951 and began operating a pair of AN/CPS-6B radars from here in October, assuming coverage previously provided by the Lashup site at Grenier AFB, New Hampshire (L-4), and initially the station functioned as a Ground-Control Intercept (GCI) and warning station.

As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes.

In addition to the main facility, Brunswick AFS operated an AN/FPS-14 unmanned Gap Filler site: Over the years, the equipment at the station was upgraded or modified to improve the efficiency and accuracy of the information gathered by the radars.

Units: Assignments: This article incorporates public domain material from the Air Force Historical Research Agency