 He served during 1845–46, and then filled in when another intern had to leave the following mid-year.He took further medical courses at the University of Louisville Medical Department in 1848–49 and at the medical department of the University of the City of New York in 1849–50, graduating later that same year.After one-year internship in Bellevue Hospital and two years with the New York Dispensary, Moore entered the Army as assistant surgeon in 1853.