Allied Pilots and Sailors Face Navy Probes After Friendly Fire

By Harlan Pryce · August 10, 2026

Burned by friendly fire, Allied airmen and sailors faced Navy boards of inquiry to determine who was responsible for losses in the South Pacific.

The United States National Archives maintains a collection titled "Records Relating to Operations" (NAID 5721365). It is not a narrative history, but a series of administrative and operational files that track the Allied effort to dismantle Japanese power in the South Pacific. Within these files, the Navy applied a specific identifier: "Blue 242." This title was used to organize records associated with the Commander, Air Forces, South Pacific, known as COMAIRSOPAC.

According to the file's catalogue entry, the bulk of these records center on Operation Cartwheel. In the public record, Cartwheel is described as a major military effort between 1943 and 1944 to neutralize the Japanese base at Rabaul on New Britain Island. The operation involved a pincer movement: General Douglas MacArthur’s forces advanced along the coast of New Guinea, while Admiral William Halsey’s forces moved through the Solomon Islands toward Bougainville. The archival description confirms that the records in this series reflect this broad strategic goal, containing the plans and orders required to isolate Rabaul within the Bismarck Archipelago.

Watchtower, Toenails, and Galvanic

The scope of the records extends beyond the primary goals of Cartwheel. The catalogue entry notes that the documentation covers several other critical operations. These include Operation Watchtower, the August 1942 invasion of Guadalcanal and Tulagi in the Solomon Islands; Operation Toenails, which involved the occupation of New Georgia during the summer of 1943; and Operation Galvanic, the November 1943 invasion of the Gilbert Islands.

To support these movements, the records include the Task Force 33 order of battle, as well as lists of commanding officers and the specific locations of aviation squadrons. The logistics of these campaigns are documented through plans and progress reports regarding the construction of airfields and the necessary facilities to keep them operational in a jungle environment.

Coordination between the different branches of the military is a recurring theme in the archival description. The series contains instructions for cooperation between air and naval forces, specifically regarding the provision of air cover for amphibious assaults and naval bombardments of enemy-held islands. These documents map out the tactical requirements for air attacks on Japanese installations across the South Pacific, effectively documenting the transition from defensive holding actions to offensive projection.

Friendly Fire and Interrogations

While the plans and orders provide the official narrative of the campaign, other documents in the series record the frictions and failures of combat. The catalogue entry lists reports on "friendly-fire incidents between aircraft and surface vessels." These were not merely noted; the series includes the transcripts and findings from boards of inquiry convened to investigate how these incidents occurred and who was responsible.

Combat experience is further preserved through transcripts of debriefings from combat pilots. These firsthand accounts are paired with quantitative data, including summaries of Allied air losses and estimates of enemy air losses. The records also detail the intelligence-gathering process, specifically citing the "interrogations of captured Japanese airmen."

Interestingly, the South Pacific files contain a document that seems geographically misplaced: a critical assessment of strategic bombing operations in Europe. The catalogue entry does not explain why this assessment was filed alongside South Pacific operational records, leaving a gap in the administrative logic of the series. The collection is supplemented by visual and cartographic data, with reconnaissance photographs, charts, maps, and map overlays accompanying some of the text-based documents.

October 19, 1942

The technical side of the air war is captured in the series' standard operating procedures. The records outline the protocols for strategic searches and anti-submarine patrols, the invisible grid work that allowed COMAIRSOPAC to monitor the movements of the Japanese fleet.

Other archives hold related materials on this subject, including the National Archives' "Background Files to the Study 'Cartwheel: The Reduction of Rabaul'" and various reports from the Combined Staff Planners in the State Department's FRUS files. These supplementary records exist, though they are not part of the "Blue 242" series.

The final subseries of the collection is the most granular. It consists of logbooks that provide general information about patrol aircraft operations. These logs create a day-by-day timeline of activity in the South Pacific, beginning on October 19, 1942, and ending on October 21, 1943.