Are you able to share the information or the acronyms that are being used. Also do you have information such as a DOB, and place of birth for him?
Dear Ms. Chiodo,
Thank you for posting your request on History Hub!
We suggest that you review the National Archives Library Information Center web page of Reference Materials that may assist you with determining the meaning of the terms and acronyms. We also located a List of Authorized Abbreviations: World War I Service Discharge Cards.
We hope this is helpful. Best of luck with your family research!