The following information was assembled from numerous sources and cannot be used directly as proof of Qualifying Service or Lineage.
It is considered a research aid and is intended to assist in locating sources that can be used as proof.
Birth: 13 Sep 1721 Billerica / Middlesex / MA Death: bef 09 Oct 1782 Bedford / Middlesex / MA
Qualifying Service Description:
Bacon, Thomas, Bedford. Private, Capt John Moore's co., which marched on the alarm of April 19, 1775; service, 6 days
List of men between the ages of sixteen and sixty who are liable to bear arms, as returned to Colonel Green, dated Bedford, May 15, 1775 (Secretary of the Commonwealth, 1896, p. 424)
Additional References:
DAR Patriot Index, Vol 1, pg 26
SAR Patriot Index Edition III (CD: PP2210, Progeny Publ, 2002) plus data to 2004
Secretary of the Commonwealth. (1896). MA Soldiers and Sailors in the Rev War (Volume I). Boston: Secretary of the Commonwealth
Middlesex County, MA: Probate File Papers, 1648-1871.Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2014. (From records supplied by the MA Supreme Judicial Court Archives.Digitized images provided by FamilySearch.org) 
Hatcher, Patricia Law. Abstract of Graves of Revolutionary Patriots. Vol. 1-4. Texas. Dallas: Pioneer Heritage Press, 1987, has two listings for burials under the name of Thomas Bacon in Bedford, Massachusetts
Directions to Cemetery / Gravesite:
Author: Mark Andrew Davis
Thomas Bacon was born on 13 September 1721 in Billerica, Middlesex County, Massachusetts, the son of Nathaniell and Judeth Bacon.
He was married in Bedford, Middlesex County, Massachusetts on 11 April 1749 to Elisabeth Ditson. The following children are found the in vital records of Massachusetts:
Elizabeth was born on 26 February 1750.
Anna was born on 27 January 1752 and married Isaiah Ierland.
Rhoda was born on 19 November 1758 and married Samuel Dutton.
Jonas was born on 8 May 1764 and married Elizabeth “Betty” Smith.
Lydia was born on 5 October 1769.
There were multiple men named Thomas Bacon who served in the Revolutionary War from Massachusetts. However, there is only one who joined from Bedford. Thomas served as a Private in the Company of Captain John Moore. He marched on the alarm of 19 April 1775 [Lexington and Concord] in a short tour of six days. His name appeared on a list dated 15 May 1775 of the men of Bedford aged 16 to 60 who a liable to bear arms. Thomas would have been about 54 years old at the time.
The Patriot died before 9 Oct 1782 when his widow Elizabeth was made executor of his estate in Bedford, Middlesex County, Massachusetts.
Sources:
Secretary of the Commonwealth, Massachusetts Soldiers and Sailors of the Revolutionary War, Massachusetts. Boston: Wright & Potter Printing Co., 1901, Vol. 1, page 424.
Massachusetts Vital Records, Town of Bedford Births, Marriages, and Deaths pages 10-12, 63.
Patriot biographies must be the original work of the author, and work submitted must not belong to another person or group, in observance with copyright law. Patriot biographies are to be written in complete sentences, follow the established rules of grammar, syntax and punctuation, be free of typographical errors, and follow a narrative format. The narrative should unfold in a logical manner (e.g. the narrative does not jump from time period to time period) or have repeated digressions, or tell the history of the patriot's line from the patriot ancestor to the author. The thinking here is that this is a patriot biography, not a lineage report or a kinship determination project or other report published in a genealogy journal. The biography should discuss the qualifying service (military, patriotic, civil) of the patriot ancestor, where the service was rendered, whether this was a specific state or Continental service, as well as significant events (as determined by the author) of the patriot's life. This is the entire purpose of a patriot's biography.
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Additional Information:
Will probated in Middlesex County states that Thomas Bacon, of Bedford, died intestate