I think they do have a database for that you might want to call up and ask them how to retrieve that information
It may be that they died in battle and there was not a known exact day and month i know some can be like that. But definitely like AT said give them a call and they may have more information on the person buried there
I agree with previous poster, you would have to call or visit and ask for the information directly. I am sure they could at least try to help.
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