The National Archives will not be able to assist you over the phone. They are not manned to do such things. Remember, the Compiled Military Service Records (CMSR) have "cards" that are ABSTRACTS of information on a soldier when an original record has multiple names such as on a Company Muster Roll. It contains original records when the document pertains to a particular individual in the case of Supply Requisitions, Vicksburg Paroles, Pay Vouchers, filing for the balance in pay and allowance from widows or parents, and etc. For the original records that these names were ABSTRACTED from, you would have to go the National Archives. You would need to take the orientation, receive a Researcher's Card, and then request to see the record. If they happen to have that record on microfilm they will first require you to look at the microfilm and only if the document was unreadable then will they pull the document. That will be a two hour turn around from the time you put the request in, for them to pull it, and your sitting in the viewing room.

No archives (i.e. National Archives, Old Court House Museum, University of Alabama) are not manned to do research over the phone and especially indepth, time consuming research. They do normally have a list of researchers available to do research but this is a pay service and be prepared to pay.

Since your Andrew Cawood was severely wounded in the leg in action on June 22, 1863, was present in Vicksburg during the surrender (July 04, 1863), signed his parole on July 15, 1863, and evacuated on July 24, 1863, it is likely he was evacuated with the ill and wounded to Mobile and then from there to a convalescent hospital to make a slow recover but in his case he died August 05, 1863. Samuel may have been his attendent or was either ill or wounded himself. I did not see a CMSR for a Samuel Cawood in the 43rd Tennessee Infantry Regiment. If you find the hospital records what it will have is a date of admittance, date of discharge (or in this case death), maybe the physician's name, maybe the disposition of remains and personal property, and sometimes a diagnosis. You will not find a day to day record with physician annotations, medicines administered, etc.

I hope this helps.

Respectfully,

Gerald D. Hodge, Jr.
War Between the States Historian
Historian: 39th Georgia Volunteer Infantry Regiment
http://39thgavolinfrgt.homestead.com/39thHomepage.html