ArmyAirForces.com
This site exists to help you research the United States Army Air Forces of World War II.
The Research Help page explains what to look for, and where you can find it. It is a resource built from first hand experience.
The Data pages are helpful tools. See the Combat Chronology, Missing Air Crew Reports, Airfields & Bases, Dictionary, Military Occupation Specialties, and Army Post Offices databases.
Finally, the most important resource of all - the ArmyAirForces.com Forums. Questions are answered on the forums every day thanks to thousands of members with expertise on specific units, and many unique aspects of the Army Air Forces.
-Scott Burris, ArmyAirForces.com