question about African Americans unit in Italy since July to September 1945 in Tolentino

Kamil,

Your question may be difficult to answer.  As you noted in your post, the 92nd Infantry Division is likely the unit involved; however, Army records from the July-September 1945 period may be difficult to identify as many U.S. Army units were demobilizing or moving to the Pacific theater.  Some units changed names and missions.  For example, personnel from the 92nd's 366th Infantry Regiment transferred into the 224th and 226th Engineer Service Regiments after the surrender of Nazi Germany.  Other units like the 92nd Infantry Division's 370th Infantry Regiment, the 758th Tank Battalion, and the 598th Field Artillery Battalion could also be candidates to be the unit in Tolentino.

I defer to my colleagues in Research Services to identify any candidate records that could assist you.

I wish you the best of luck in  your research.