CDS Coaching in Kolkata help qualify graduates for the Combined Defence Services Examination conducted by UPSC twice yearly. CDS opens entry into Indian Military Academy (IMA), Officers Training Academy (OTA), Indian Naval Academy (INA), and Air Force Academy (AFA). Exam subjects: English, General Knowledge, and Mathematics (for IMA, INA, AFA). OTA entry will require only English and ... https://aimdefenceacademy.com/cds-coaching-kolkata/