Here is some information on your uncle below, Marine Corps Muster Rolls.
Name: John W Bradshaw Rank: Private First Class Muster Date: Oct 1955 Station: B Co 3Damtracbn Fmf, Camp Pendleton California Name: John W Bradshaw Rank: Private First Class Muster Date: Jan 1956 Station: H and Sco Tracvehtrng Bn, Camp Pendleton California Name: John W Bradshaw Rank: E2 Muster Date: Jan 1956 Station: H-S Co Trac Veh Trng Bn Supp Arms Trng Regt Mcb Camp Pendleton Calif Name: John W Bradshaw Rank: E2 Muster Date: Apr 1956 Station: Supp Arns Trnc Rect Mcb Camp Pendleton Cal Name: John W Bradshaw Rank: Private First Class Muster Date: Oct 1955 Station: B Co 3Damtracbn Fmf, Camp Pendleton California Name: John W Bradshaw Rank: E1 Muster Date: Apr 1954 Station: Recruits 3Rd Rec Trng Bn Mcrd San Diego Calif, Mri Camp Pendleton
Dear Mr. Marino,
Thank you for posting your request on History Hub!
We suggest that you request a copy of his Official Military Personnel File (OMPF). OMPFs and medical records of officers and enlisted personnel of the U.S. Marine Corps who were separated from service after 1904 and before 1959 are located at NARA's National Personnel Records Center (NPRC), (Military Personnel Records), 1 Archives Drive, St. Louis, MO 63138-1002. To request these records, please mail a completed GSA Standard Form 180 to NPRC. Veterans and their next of kin also may use eVetRecs to request records. See eVetRecs Help for instructions. For more information see Official Military Personnel Files (OMPF), Archival Records Requests.
We searched the National Archives Catalog and located Records Relating to Korean War and Early Cold War Operations and Training, 1948 - 1962 in the Records of the U.S. Marine Corps (Record Group 127) that contains 44 files relating to the 1st Tank Battalion; as well as Korean Command Diary Files, 1950 - 1954 and Administrative and Operational Records, 7/3/1950 - 3/1/1955 in Record Group 127 that include records relating to the 1st Tank Battalion during the Korean War. For more information about these records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at Archives2reference@nara.gov.
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. Also, NPRC will continue servicing requests ONLY associated with medical treatments, burials, homeless veterans seeking admittance to a homeless shelter, and those involving the VA Home Loan program. If your request is urgent, please see Emergency Requests and Deadlines. Please refrain from submitting non-emergency requests such as replacement medals, administrative corrections, or records research until NPRC returns to pre-COVID staffing levels. Please check archives.gov/veterans for updates to the NPRC operating hours and status. We apologize for this inconvenience and appreciate your understanding and patience.
Additionally, we searched the Library of Congress’s Veterans History Project and located 19 collections relating to the US Marine Corps 1st Tank Battalion during the Korean War.
We hope this is helpful. Best of luck with your family research!