It looks like Mark Stratton was born in 1812-1889, he is a decendent of Thomas Stratton born in New Jersey 1760 and died in Beaver County, PA 1846. Thomas Stratton was brought up a Quaker serving in Rev War for two years records indicate he enlisted in Continental Army in an Orange County, New Jersey Regiment under Capt John Sanford in Col William Malcoms Regiment April 1, 1777. Dose this sound like your ancestors. This Mark Stratton could have been named after Mark Stratton the first.
Fold3 has free access to Revolutionary War records until July 15th. A search for "Stratton" in Revolutionary War records related to New Jersey comes up with results for a Lot Stratton, James Stratton (Holme's Battalion, Militia), Anias Stratton (Cumming's Battalion), Annanias Stratton (Second Regiment), and Annanias Stratton (Cumming's Battalion). There may be more that I'm missing. Fold3 and Ancestry can also be accessed for free year round at any National Archives location (https://www.archives.gov/locations)and at some libraries. You can also order Revolutionary Service Records directly from the National Archives. https://www.archives.gov/veterans/military-service-records/pre-ww-1-records
All of the military service records in federal custody from this time period are at the National Archives in Washington DC. Their contact information is here if you want to speak to them directly: https://www.archives.gov/dc
You should also contact the New Jersey State Archives to see if they have any militia records. https://www.nj.gov/state/archives/index.html
New Jersey has an excellent set of Revolutionary War manuscript indexes which were compiled by New Jersey Adjutant General William Stryker in the late 1800s. This index exists as summary cards and more detailed slips at the New Jersey State Archives (NJSA). What I love about this resource is that the Stryker compiled the available State manuscripts with the Federal records on one card, so it is incredibly comprehensive.
The cards are available on microfilm, at NJSA and other locations, or you can browse the online index and order copies (https://wwwnet-dos.state.nj.us/DOS_ArchivesDBPortal/index.aspx ; fill in the information and click "Add to Cart" to see results). You can use the microfilm in person (when they open again), or send in an order form.
From this page, https://wwwnet-dos.state.nj.us/DOS_ArchivesDBPortal/index.aspx, you can access the Revolutionary War Records request and search the Claims of Damages (both by U.S. and British troops—and, no, they never paid for the damages!). Also, look under the State Service and Pension records here for more information and record sets, https://www.familysearch.org/wiki/en/New_Jersey_Military_Records
I have found some amazing documents using the index cards—some where I did not expect them to be. A while back, I wrote up this letter I discovered at NJSA, which was indexed to one of my ancestors. Other ancestors of mine are listed on the letters but, as it was unclear (possibly intentionally so) how to tell which person with the same name was which just by the signatures, the letter was only indexed to a few people who could be confirmed. https://www.njgsbc.org/bergen-county-six-objects/bergen-county-petition/