Did William Serve in the Revolutionary War?

I have had this copy of a military document for many years, but I can find no proof that this is our William Miller.

To begin with, there is no indication of which part of Maryland this person is from.  According to Wikipedia, the 3rd Maryland Regiment was organized on 27 March 1776 of eight companies from Anne Arundel, Prince George's, Talbot, Harford and Somerset Counties of the colony." From everything we know about our William, at this point in time he owned property and lived in Cecil County, Maryland.  I also have records proving that an unrelated William Miller lived in Harford County at this time.

Additionally, according to Wikipedia, this regiment served from 1776 until 1783. We know from an extract of Cecil County marriage records that our William married Rebecca Bradford on 13 June 1778.  While this marriage date does not preclude military service, I think it is unlikely that our William, 46 years old when married, was serving at this time of his life.

Finally, our William is listed in the National Patriots Index, p. 470, National No. 300007, National Archives: "Miller, Wm.: b 2-22-1732  d 1814  m Rebekah Bradford  PS MD."  A letter from a fellow researcher, Ann Curnow, notes that PS stood for "Patriot Service" and meant civilian service.

If anyone has further information to prove this is our William Miller, it would be great if you could comment below or email at the address to the right.

Thanks!