How can I find WWII info on what Company and Division my grandfather was in?

How can I find WWII info on what Company? (A-B-C) or Division (infantry?) my grandfather was in?

On Musters of 4-30-1939,  it's Company K, 29th Infantry. But 4 months later on Muster dated 8-31-1939, it says Co. B, 38th Infantry.

Most confusing is the Army - Army Air Corp division & "searches" and he actually retired from the military at Vance Air Force Base, so he's shown as the Air Force also.

So many moving variables.

I want to see if I can possibly pinpoint him overseas - Normandy, Northern France, Rhineland, Ardennes & Central Europe (which I know from his medals he received) but I'm confused as to what search "words" to use to drill down to facts.

His name was Glenn Hardgrave, retired Master Sergeant and his Army serial No. was 06260307. 


    Thank you for posting your question to History Hub!

    It seems our community has provided good resources for you to consider. In addition to those suggestions, you might want to consider the information below.
    The Textual Reference Archives II Branch (RR2RR) has custody of the Records of the Adjutant General's Office, 1917- (Record Group 407), U.S. Army Command Reports, 1949-54, and the Records of U.S. Army Operational, Tactical, and Support Organizations (World War II and Thereafter) (Record Group 338).  Command reports among these records consist mostly of narrative historical and after action reports as well as unit journals and other supporting documents.  Because the files are arranged hierarchically, identification of the specific unit (i.e., division, regiment, and battalion) and date of interest are necessary before a search can be conducted.  We do not have a name index to these records.  
    While these records focus on the unit as a whole rather than on the individual soldier, they may be able to assist with creating a timeline through the records created by the unit.  The records in the World War II Operations Reports typically only go to the lower echelon of regiment for Infantry in the organization of the records, but there are times where company files can be found amongst the regimental records.  We were unable to locate records for the 4267 Quartermaster Truck Company, but there may be records mentioning this company in higher echelon records.  We will be happy to make the records and their finding aids available to you or your representative in the Textual Research Room (Room 2000) here at the National Archives at College Park, Maryland. Please visit our website for information about visiting the National Archives in College Park, MD, including how to schedule a research visit.
    Since you believe that Glenn Hardgrave may have switched to different units during the war, Morning Reports may assist with tracking the next unit after his transfer.  Morning reports for Army units (from November 1, 1912 to 1959) and Air Force units (from September 1947 to June 30, 1966) are in the custody of the National Archives in St. Louis, MO. Please contact them for access to these records. The address is the National Archives in St. Louis, 1 Archives Drive, St. Louis, MO  63138-1002 and the email address is
    We invite you to continue the conversation with community members on History Hub, but should you have follow up questions for the staff at Archives II, please email us at so that we can assist you further.

    We hope this assists you with your research!


    Textual Reference Archives II Branch (RR2RR)
    [RR2RR 23-59673-LN]
  • Thanks for the information but the question was posed by Angela Hudson, I just posted a reply to her questions.

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