Its last assignment was with the 481st Night Fighter Operational Training Group, based at Hammer Field, California.

Its personnel being veteran American pilots trained by the Royal Air Force in night interception operations.

In September, the first American-built dedicated night fighters began to arrive, the Northrup YP-61 Black Widow and a few production P-61As.

[1] In March 1944 the 349th was disbanded when the Army Air Forces found that standard military units, based on relatively inflexible tables of organization were proving less well adapted to the training mission.

[1] This article incorporates public domain material from the Air Force Historical Research Agency