This is a citizen's legal obligation to serve as a part of the body that determines the guilt or innocence of a person accused of a crime

Explanation:

I think you are defining a jury. Juries in the United States are usually between 6 and 12 people. As a citizen when asked and picked, you must serve on a jury unless there is some medical reason why you can't.

I'm thinking of a woman I know who could get up a flight of stairs in a court house. She was excused immediately.

answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.