Dear Ms. Jessup,
Thank you for posting your request on History Hub!
We suggest that you request copies of the Muster Rolls for the various units he served in. We searched the National Archives Catalog and located the Muster Rolls, 1/1941 - 12/1945 in the Records of the U.S. Marine Corps (Record Group 127) that include the units you seek. For access to these records, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com.
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.
The Marine Corps muster rolls have been digitized by 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!