Secretary of Defense Says USFJ Has Begun Reorganizing into a “Warfighting Headquarters”

It the coming years USFJ is going to turn into a warfighting headquarters much like USFK in Korea:

U.S. Forces Japan has begun reorganizing into a “warfighting headquarters,” U.S. Defense Secretary Pete Hegseth said Sunday during his first trip to the Indo-Pacific since taking office. Hegseth that day discussed restructuring USFJ amid regional security challenges with Japanese Minister of Defense Gen Nakatani at Camp Ichigaya, the Ministry of Defense headquarters in central Tokyo.

The Defense Department has begun the first phase of upgrading USFJ into a joint force command better equipped to coordinate with its Japanese counterpart, Hegseth told reporters after the meeting. “This also means reorganizing U.S. Forces Japan into a warfighting headquarters, increasing its staff and giving its commander the authorities needed to accomplish new missions,” he said

Stars and Stripes

You can read more at the link, but a difference I see between the future USFJ and USFK is that the USFK commander has operational control of US and ROK forces during a conflict. The future USFJ will instead coordinate with Japanese Joint opeational command during conflict.