Final answer:
There is a confusion regarding Captain John Parker's post-revolution actions because he died in 1775, during the early stages of the American Revolution. As such, discussing his actions after the revolution is not possible.
Step-by-step explanation:
Unfortunately, there seems to be a mix-up with the historical figures. The question inquires about Captain John Parker and his actions after the American Revolution. However, he did not live long after the revolution; he passed away in September 1775, which was during the early stages of the war. Therefore, discussing the actions of Captain John Parker after the Revolution is not applicable because he did not survive the war. It's possible that the student is asking about another historical figure or has the timelines confused. For clarity, Captain John Parker was a prominent figure at the beginning of the American Revolution, known for his leadership during the Battle of Lexington in April 1775.