Hello Satyaprakash,

You would be very happy to know that rank doesn't matter for eligibility of CDS, You should be in last year or graduated from any field(degree) for CDS IMA.

The education qualifications of CDS are mentioned below,

All the candidates should have completed their Graduation or should be appearing for the final year degree examination. The individual educational qualification required for each institution is discussed below.

• I.M.A. and OTA: Degree of a recognized University or equivalent.
• Indian Naval Academy (INA):  Degree in Engineering from a recognized university/institution.
• Air Force Academy: Degree of a recognized University (with Physics and Mathematics at 10+2 level) or Bachelor of Engineering.

Note: The candidates who are in the final years of their Degree Course and have yet to pass the final year Degree examination are also eligible to apply. Such candidates are required to submit the proof of passing the requisite qualifying examination by a date to be specified in the Commission’s Notice for the Examination.