CDS stands for Combined Defense Services. This exam is conducted by UPSC twice a year for those candidates who want to pursue their career as a commissioned officer in Indian Navy, Army or in Air force after completing their graduation.
For more details about CDS exam you should refer to the link given below :-
UPSC has released the eligibility notification of CDS 2020. UPSC Combined Defence Service 2020 eligibility criteria consist of age limit, nationality and educational qualification.
As per the CDS exam eligibility 2020, Indian nationals having an age between 19- 25 years are eligible for the exam. Moreover, candidates who have passed graduation or appearing for their final year are eligible to apply for CDS exam.
Note that only eligible candidates will be able to fill the CDS application form.
The detailed UPSC CDS 2020 eligibility criteria is given in the link below, do visit this :-
I hope this information helps you.