[1] In October 1771, Wyllys led the successful petition to the Connecticut General Assembly to create the Governor's Guard.
He saw action in the Battle of Long Island and served in the New York vicinity until the end of the year.
Following the war, Wyllys served as a representative in the Connecticut General Assembly and town clerk of Hartford.
[5] Wyllys resigned his position as a result of some kind of paralytic affliction.
Wyllys's funeral procession included members of the First Company Governor's Foot Guard, of which he had served as the first commanding officer.