Dear Ms. Feist,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, 1/1/1939 - 1/1/1949 in the Records of the Bureau of Naval Personnel (Record Group 24) that includes digitized Kankakee - Muster Rolls and may be viewed online. We located a Pedro Vacquer who is on a list of enlisted men received from USS Boxer (CV-21) on May 16. 1946. His name is listed on Image 587. However, the rank listed for him is Steward's Mate 3rd Class, which is a Navy rank. Therefore, if your grandfather was in the Army at this time, this can not be him. Also, Navy muster rolls are only for naval personnel assigned to a vessel and do not include passengers from other services.
We searched the World War II Enlistment Records on the National Archives’ Access to Archival Databases (AAD) and located the following entry for VAQUERA#PEDRO#M that may be a match for your grandfather.
We suggest that you request a copy of his Official Military Personnel File (OMPF). OMPFs and individual medical reports for officers of the U.S. Army who were separated from the service after June 1917 and prior to 1958 are in the custody of NARA's National Personnel Records Center in St. Louis. In many cases where personnel records were destroyed in the 1973 fire, proof of service can be provided from other records such as morning reports, payrolls, and military orders, and a certificate of military service will be issued. Please complete a GSA Standard Form 180 and mail it to NARA's National Personnel Records Center, (Military Personnel Records), 1 Archives Drive, St. Louis, MO 63138-1002. For more information see Official Military Personnel Files (OMPF), Archival Records Requests.
However, please note that due to the coronavirus public health emergency, the National Personnel Records Center is servicing only urgent requests related to homeless veterans, medical emergencies, and funerals which may be faxed to 314-801-0764. We thank you for your patience and look forward to resuming normal operations when the public health emergency has ended.
Selective Service records for individuals who served after World War I and were 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: cards and classification histories. The individual Draft Registration Card (SSS Form 1) may contain information such as: name, Selective Service registration number, age, date and place of birth, ethnicity, place of residence at time of registration and basic physical description. The Classification History (SSS Form 102) may contain: name; date of birth; classification and date of mailing notice; date of appeal to the board; date and results of armed forces physical examination; entry into active duty or civilian work in lieu of induction (may include date, branch of service entered and mode of entry, such as enlisted or ordered); date of separation from active duty or civilian work; and general remarks. Please complete a Form NA-13172 to request a search of these records.
Please note that the National Archives and Records Administration (NARA) has suspended reproduction and digitization services for selective service records until further notice due to COVID-19. Orders will not be serviced until operations can resume safely. Once operations resume, document reproduction requests will be filled in the order in which they were received. We apologize for any inconvenience.
We located a Draft Registration Card for Pedro Martinez Vaquera that may be a match for your grandfather. It has been digitized and may be viewed using Ancestry. In response to the COVID-19 pandemic, the National Archives has partnered with Ancestry to make the vast majority of their NARA-digitized holdings freely available to the public. Anyone with Internet access may create an account, access NARA records, and use other Ancestry resources, such as their educational offerings and family tree-maker application. For more information see Ancestry’s announcement -- “Free At-Home Education Resources From Ancestry® and Access to Nearly 500M National Archives Records”.
We hope this is helpful. Best of luck with your family research!