252nd Air Group

252nd Air Group
Not given; states that Kazuo Tsunoda provided the photograph · Public domain · source
Unit name	252nd Air Group
Dates	1944–1945
Country	Empire of Japan
Allegiance	Imperial Japanese Navy
Branch	Imperial Japanese Naval Air Service
Type	Air Group
Role	Naval aviation, fighter and bomber operations
Size	~30–50 aircraft (varied)
Garrison	Various, including Miyakejima, Chichi-jima
Battles	Pacific War, Philippine Sea, Battle of Leyte Gulf

252nd Air Group The 252nd Air Group was an aviation unit of the Imperial Japanese Navy Air Service active during the later stages of the Pacific War. Formed in 1944, the group participated in the defense of Japanese-held islands and in major naval engagements as the Imperial Japanese Navy confronted Allied advances led by the United States Navy, Royal Australian Air Force, and United States Army Air Forces. The unit operated a mix of fighters and attack aircraft and was involved in sorties originating from the Bonin Islands and the Philippines campaign (1944–45) theater.

History

The group was established in mid-1944 amid reorganizations of the Imperial Japanese Navy Air Service following losses at Leyte Gulf and attrition in the Marianas campaign. Elements of dissolved units and veteran aircrew from formations such as the 341st Air Group and the 201st Kokutai were consolidated to form the 252nd Air Group to bolster defenses around strategic nodes including Chichi-jima and forward airstrips used during the Philippine Sea engagements. During late 1944 and early 1945 the group was affected by the Battle of the Philippine Sea aftermath, shortages of fuel and replacement airframes, and Allied carrier-based raids by forces from Task Force 38 and Task Force 58. As the Okinawa campaign progressed, surviving elements of the group were redeployed, disbanded, or absorbed into other units such as the NAGATA Air Group and the 752nd Naval Air Group.

Organization and Structure

The 252nd Air Group followed the standard Imperial Japanese Naval Air Service organizational pattern with flight and squadron-level subdivisions, comprising several chūtai (squadron) and hikōtai (flight) elements. Command was exercised via a hikōchō (air group commander) supported by a kokutai staff drawn from veteran cadres of Yokosuka Naval Air Group and Kawasaki Kokutai traditions. Logistics and maintenance fell under depots influenced by the Naval Air Technical Arsenal system and coordinated with coastal defense units stationed on islands like Iwo Jima and Miyakejima. Operational command linked the group to regional fleets including the Combined Fleet and local base commands such as the 6th Fleet shore establishments.

Aircraft and Equipment

The 252nd Air Group operated a mixture of fighter and attack types characteristic of late-war Imperial Japanese naval aviation. Primary fighters included variants of the Mitsubishi A6M Zero and late-model interceptors influenced by the Kawanishi N1K series, while attack sorties used the Aichi D3A Val and twin-engine types such as the Mitsubishi G4M in reconnaissance roles. The group intermittently received specialist equipment including external drop tanks derived from Nakajima Aircraft Company modifications and captured or improvised avionics adapted from Atsugi Naval Air Station workshops. Shortages of replacement airframes and ordnance, exacerbated by Allied interdiction of supply lines to Formosa and the Home Islands, forced cannibalization from depots like Kawasaki Heavy Industries facilities.

Combat Operations

Operational sorties by the 252nd Air Group included air defense patrols, interception of carrier task forces, bomber escort missions, and strike operations against Allied amphibious forces during the Philippines campaign (1944–45). The unit engaged U.S. carrier aviation from Enterprise (CV-6)-class groups and clashed with land-based units supported by Fifth Air Force and Thirteenth Air Force elements. The 252nd participated in coordinated sorties during the Battle of Leyte Gulf aftermath and provided support during the defense of outlying bases threatened during the Bonin Islands campaign. Attrition from engagements with aircraft such as the Grumman F6F Hellcat and Vought F4U Corsair—operated by units including VF-3 and the Royal New Zealand Air Force squadrons—diminished operational capacity, while Allied submarine operations by boats like USS Wahoo and USS Tang disrupted logistics.

Notable Personnel

Personnel associated with the 252nd Air Group included experienced pilots and ground officers drawn from storied units like Tainan Air Group and Hikōtai traditions of the Imperial Japanese Navy; names occasionally appear in wartime reports alongside commanders from formations such as Kondō Nobuo-led elements and staff officers previously assigned to Yokosuka Naval District. Some veteran aviators later featured in postwar memoirs alongside contemporaries from the 341st Air Group and the 201st Kokutai, while maintenance chiefs had prior service at Atsugi and Sasebo Naval Arsenal establishments.

Legacy and Commemoration

After Japan’s surrender following Surrender of Japan, surviving members of the 252nd Air Group returned to the Home Islands where personnel reintegrated into civilian life or joined postwar aviation narratives associated with the Allied Occupation of Japan and the reconstitution of Japanese aviation industry firms such as Mitsubishi Heavy Industries and Nakajima Aircraft Company successors. Memorials to fallen aviators are found at island cemeteries on Chichi-jima and within museums preserving artifacts from formations like the Imperial Japanese Navy Air Service, including exhibits referencing actions in the Philippine Sea and Leyte Gulf. Historians referencing the unit appear in studies on late-war naval aviation alongside works on the Combined Fleet and analyses of carrier warfare by scholars examining the Pacific Theater.

Category:Imperial Japanese Navy Air Service