(AMEDDC&S). ApplicationforenrollmentshouldbemadeattheInternetwebsite:http://.atrrs.army.mil. Youcanaccessthecoursecatalogintheupperrightcorner.EnterSchoolCode555for medicalcorrespondencecourses.Copydownthecoursenumberandtitle.Toapplyfor enrollment,returntothemainATRRSscreenandscrolldowntherightsideforATRRS ...