Can you tell me what else was on the orders was it issued by the headquarters or were they field orders?
United Nations Relief and Rehabilitation Administration (UNRRA) was an international relief agency, largely dominated by the United States but representing 44 nations. Founded in 1943, it became part of the United Nations in 1945, and it largely shut down operations in 1947.
Might want to look at the United Nations Archives.
Dear Ms. Eckstein,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located Records Relating to U.S. Participation in the United Nations Relief and Rehabilitation Administration, 1940 - 1949 in the General Records of the Department of State (Record Group 59) that may include the codes. We also located the Records Relating to the United Nations Relief and Rehabilitation Administration, 1943 - 1946 in the Records of Mediterranean Theater of Operations, United States Army (Record Group 492) and the Reports from the United Nations Relief Rehabilitation Administration, 1946 in the Records of Headquarters, European Theater of Operations, United States Army (World War II) (Record Group 498) that may include records relevant to your search. For more information about these records and others, please contact the National Archives at College Park - Textual Reference (RDT2) at firstname.lastname@example.org.
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.
And as previously posted, we suggest that you contact the Archives and Records Management Section, ARMS FF-109, United Nations, New York, NY 10017. The web site is https://search.archives.un.org/.
We hope this is helpful. Best of luck with your family research!