Dear Mr. Knapp,
Thank you for posting your request on History Hub!
The information you seek may be recorded on your Selective Service records. Selective Service records for individuals who served after World War I and born before 1960 are in the custody of the National Archives at St. Louis (RL-SL), P.O. Box 38757, St. Louis, MO 63138-0757. There are two types of records: ledgers and cards. Please complete Form NA-13172 to request a search of these records.
You may wish to search the Selective Service System Classifications; Medical Conditions That Can Keep You From Joining the Military; and Army Medical Disqualifications List websites for possible additional information about medical disqualification factors.
We hope this is helpful.