The 305th FCS then moved to Blackstone Army Airfield, Virginia on 1 September 1943, where it again served as an operational training unit, this time for Third Air Force's III Fighter Command.

While controlling fighters in the Blackstone area, the 305th FCS conducted training with a signal air warning company and AAA battalions.

The squadron was alerted on 24 March 1944 for an overseas move, and in April all of the outlying detachments were pulled back to Galveston Army Airfield.

Detachment 1 305th FCS, was formed at Bellows Field on 15 February 1945 and on 19 March moved to a combat zone initially attached to the 318th Fighter Group.

Following the surrender of Japan the 305th FCS was reassigned to 301st Fighter Wing, Eighth Air Force and remained at Camp Bishigawa, Okinawa.

A new Detachment 1 was located at Hedo Misake, Okinawa and a smaller radar was set up to cover a narrow blind stop caused by mountains to the north.

On 12 October 1946, the 623rd AC&W Sq sent unit personnel to establish Detachment 2, a Direction Finding (DF) Station on Aguni Shima.

By April 1947, the 623rd AC&W Sq had lost its flight control mission and was concentrating entirely upon air defense of the Ryuku Islands.

During May 1948, resources of the 623rd AC&W Sq were used to begin manning this group and the newly organized 624th Aircraft Control and Warning Squadron, which also had no personnel or equipment of its own.

Yontan Radar was designated as a Tactical Control Center during August 1948, and luckily so, on 3–4 October 1948, Okinawa was pounded by Typhoon Libby.

Typhoon Libby severely damaged Detachment 1 623rd AC&W Sq, Point Tare, so much so that the early warning site was never re-opened.

The same typhoon also badly damaged the Okinawan Air Control Center at Camp Bishigawa and Yontan Radar remained inoperable for the remainder of October 1948.

The new Okinawa Air Defense Control Center at Stillwell Park, Kadena AB opened in June 1950, and was manned by the 623rd AC&W Sq.

At that time, the 22 B-29s of the 19th Bombardment Group stationed at Andersen Field on Guam were the only aircraft capable of hitting the Korean peninsula, and this unit was ordered to move to Kadena Air Base on Okinawa and begin attacks on North Korea.

In August 1950, the 307th Bombardment Group deployed from MacDill Air Force Base, Florida to Kadena AB, Okinawa.

The YaeTake Station was closed on 27 April 1953 and all personnel were moved out by 2 May to allow for construction of a new radar facility in a rather limited space location.

The 623rd AC&W deployed to South Korea during January 1968 in support of Operation Combat Fox, the United States response to the USS Pueblo Incident.

[6] In 1969, Japan's Prime Minister Eisaku Sato and President Richard Nixon agreed to the reversion of the Ryuku Islands to Japanese control.

After the announcement of this agreement, the 623rd AC&W Sq started planning for turning over the entire defensive structure (C2 structure/radar/facilities) of the Ryuku Islands to the JASDF.

Detachment 1 623rd AC&W Sq at Miyako Jima was discontinued with the JASDF assuming control of that Air Station and defense operations on 15 Feb 1973.

The JASDF took over Yoza Dake Air Station operations from Detachment 3 623rd AC&W Sq on 1 Mar 1973, assuming responsibility for detection and identification of the entire Ryuku chain.

The final piece of the defense structure, the 623rd AC&W Sq's ADCC at Naha Air Base was transferred to the JASDF on 31 Jun 1973.

The newly formed 623rd Tactical Control Squadron was reconstituted with a main unit and three subordinate and geographically separated operating locations; OLAA, OLAB and OLAC.

The main unit, located at Kadena AB, was composed of the command section, operations, orderly room and the 81st Tactical Control Flight.

The 623rd deployed to northern Japan in September 1983 to assist in controlling airspace for aircraft searching for bodies from Korean Airlines Flight 007, shot down by the Soviet Union.

Unveiled in 2011, the "Pacific Pivot" aimed to transition US Military resources away from the Middle East and towards the world's most populous and economically diverse area.

This increase in military presence in the Pacific drove a review of the Command and Control structure of the US Air Force in Japan.

The SICC is responsible for daily coordination and operations with 5AF, USFJ, PACAF, III MEF, 7th Fleet, 94th AAMDC and Japanese Self Defense Forces.

This C2 system allows the 623 ACS to truly be fast, light, and lethal in support of a vast array of mission types including Multi-Domain Command and Control, Humanitarian Assistance and Disaster Response, contingencies, and providing peace and stability within the USINDOPACOM AOR.

Decorations include eleven Air Force Outstanding Unit Awards and the Republic of Vietnam Gallantry Cross with Palm.