BLUF

Unlike the RAAF, the United States Air Force wasn't officially established as an independent force until 1947. However, in 1942 during WW2, an executive order made it an autonomous force, and its commander General Henry H. 'Hap' Arnold, was made a member of the Joints Chief of Staff.

Summary

This timeline, developed from an article in Military.com, makes the following points:

References

Source Information: Military.com