The squadron was reactivated in 1947, serving in the air defense role in Panama and the Northwestern United States until the spring of 1952, when it deployed to Korea.

[5] On 2 January, the air echelon flew their Warhawks to Norfolk, Virginia, where they were loaded aboard the USS Ranger, a United States Navy aircraft carrier.

[5] The squadron arrived in the Mediterranean Theater of Operations in February and was established at its first combat station, Tafaraoui Airfield, Algeria by 1 March 1943.

[5] On 30 July, the 325th Group used diversionary tactics to lure a superior number of enemy planes into the air over Sardinia, destroying more than half of them.

In late September 1943, the squadron was withdrawn from combat to convert to Republic P-47 Thunderbolts and prepare to move to the Italian peninsula.

[4][5] However, it only operated the P-47 for a short period, converting to North American P-51 Mustangs in March 1944, and moving to Lesina Airfield, Italy on the 29th of the month.

However, on 30 January it flew its "T-Bolts" more than 300 miles at very low altitude to make a surprise attack on German interceptors defending airdromes near Villorba.

The severe losses it inflicted on the defending forces enabled heavy bombers to attack vital targets in the area without encountering serious opposition.

It also flew escort for attacks on other targets, such as airfields and marshalling yards and lines of communication in Italy, France, Germany, Czechoslovakia, Austria, Hungary, Yugoslavia and Romania.

[5] In August 1944, the squadron temporarily deployed to Tarquinia Airfield, from which they provided cover for Douglas C-47 Skytrains carrying paratroopers in Operation Dragoon, the invasion of southern France.

Later that year, he increased threat from Messerschmitt Me 262 jet fighters created a requirement to escort reconnaissance aircraft operating over enemy territory.

However, France Air Force Base was scheduled to close in August 1949, and on 29 April 1949, the squadron departed the Canal Zone for the United States.

[15] Although the squadron remained assigned to ADC, it was attached to Fifth Air Force or subordinate units for operational control while stationed in the Far East.

[17] From November until the Korean Armistice Agreement of 1953, 319th F-94s maintained fighter screens between the Yalu and Chongchon Rivers in North Korea, helping to protect Boeing B-29 Superfortress bombers from enemy interceptors.

[18] The squadron was less effective against "Bedcheck Charlies" whose radar return was lost in ground clutter at low altitudes and operated below the stall speed of the F-94s.

On 12 June, the squadron commander, while attempting to intercept a low and slow flying enemy Polikarpov Po-2 aircraft was lost when he apparently collided with his target.

[11] The F-89J was a modified F-89D, equipped as the Air Force's first nuclear armed interceptot with two MB-1 Genie rockets and an upgraded fire control system.

During the period when the squadron's planes were being modified, the 479th Tactical Fighter Wing deployed F-104Cs, which were already armed with the M-61, to augment the alert force at Homestead.

[11][34] The unit was activated again as the 319th Fighter Interceptor Training Squadron at Tyndall Air Force Base, Florida in June 1975.

[35] The unit was reactivated at the Japan Maritime Self-Defense Force's Kanoya Air Field as the 319th Expeditionary Reconnaissance Squadron in October 2022.

Pacific Air Forces is setting up the squadron to fly General Atomics MQ-9 Reaper reconnaissance operations in coordination with the Japanese Ministry of Defense in the Indo-Pacific.

[1] On 13 October 2023, the 319th ERS began relocating to Kadena Air Base after the agreement with the Government of Japan to house the squadron at Kanoya for one year expired.