For those who are interested, here is a link to Rockwood's memorial on FindAGrave. It includes information that I found a few months ago when questions about his service first came up. No mention is made of Confederate service in either his obituary or the eulogies quoted in my source. Mention is made that he was the ex fire chief, a position, if held during the war, that would likely have exempted him from service. None of this, of course, proves that he did or did not serve.

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=18751927&ref=acom