the UPSC Office by speed post
Or in person to-
Shri JD Lakra, Under Secretary CDS, Union Public Service Commission, Room No. 419, Ayoug Sachivalaya Building, Dholpur House, Shahjahan Road, New Delhi - 110069
UPSC has emailed to rejected candidates already. Please check your email that you provided during submission of application for and reply within 10days from the date of receipt of email.
List of Rejected Applications CDS Examination - I 2018