Please submit to the following if dates and units are known.
Morning reports for Army units (from November 1, 1912 to 1959) are in the custody of the National Archives at St. Louis (RL-SL). For access to these records, please contact RL-SL via email at firstname.lastname@example.org
Dear Ms. Bergs,
Thank you for posting your request on History Hub!
In addition to the morning reports referenced by Mr. Schneider, you may also wish to review the Command Reports, 1949 - 1954 in the Records of the Adjutant General's Office, 1917-1981 (Record Group 407); the Unit Histories, 1943 - 1967 in the Records of U.S. Army Operational, Tactical, and Support Organizations (World War II and Thereafter) ( Record Group 338); and the Station Lists, 1942 - 1953 in Record Group 407 that include the Korean War. The lists are arranged by command (such as Far East Command) and thereunder by date. The lists are generally monthly or biweekly. Each list is arranged by type of unit and thereunder in order by unit name or number. The nearest town is listed for each unit. For access to and/or copies of these records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com.
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. We apologize for this inconvenience and appreciate your understanding and patience.
Additionally, there may be published secondary sources available online and through libraries and bookstores that provide information about the unit you are researching. Without knowing the name of the name of the unit, it is difficult to make specific suggestions, however one place to start is the Center of Military History’s collection of online reference material concerning the Korean War.
We hope this is helpful. Best of luck with your research!