Dear Mr. Helget,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series World War II Operations Reports, 1940-1948 in the Records of the Adjutant General's Office, 1917-1985 (Record Group 407) that may include a unit history of the 383rd Infantry Regiment during WWII. For more information about these non-digitized records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com.
We also located the series World War II War Diaries, Other Operational Records and Histories, ca. 1/1/1942 - ca. 6/1/1946 in the Records of the Office of the Chief of Naval Operations (Record Group 38) that contains 4 references to the 383rd Infantry that might be of interest to you. These records have been digitized and can be viewed online via the Catalog.
Plus, we located the series Index to Personalities in the U.S. Army Signal Corps Photographic Files, 1940-1981 in the Records of the Office of the Chief Signal Officer (Record Group 111) that contains 2 references to the 383rd Regiment, 8 references to the 383rd Infantry, and 4 references to the 96th Infantry Division that may be useful for your research. This index has been digitized and may be viewed online in the Catalog. Please contact the National Archives at College Park - Still Pictures (RDSS) at firstname.lastname@example.org for assistance with these records.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT2 and RDSS. We apologize for this inconvenience and appreciate your understanding and patience.
Finally, as we noted in our response to another question you posted recently, you may wish to contact the US Army Center of Military History and the U.S. Army Heritage & Education Center to see if they can offer any assistance.
We hope this information is helpful. Best of luck with your research!