Dear Ms. Morey,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located a series titled the World War II Operations Reports, 1940-1948 in the Records of the Adjutant General's Office, 1917-1985 (Record Group 407) that includes records of the 325th Engineer Battalion, 100th Infantry Division during WWII. For access to these records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com. We were unable to locate specific records of Company B. Records of lower echelon units sometimes were incorporated into the files of the battalion.
Morning reports from November 1, 1912 to 1959 and copies of most of the monthly rosters from November 1912 - 1943 and 1947 - 1959 for Army units are in the custody of the National Archives at St. Louis. For access to these records, please write to the National Archives at St. Louis (RL-SL), P.O. Box 38757, St. Louis, MO 63138-0757 or via email at firstname.lastname@example.org. Rosters for units serving in World War II from 1944 - 1946 were destroyed in accordance with Army disposition authorities.
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 RL-SL. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!