CDS Exam Preparation: Complete Guide to Combined Defence Services 2026 Last Updated: December 20, 2026 Key Takeaways - CDS is conducted by UPSC twice a year for graduates - Entry routes: IMA (Army), INA (Navy), AFA (Air Force), OTA (Short Service Commission) - Selection: Written Exam + SSB Interview (5-day process) - Age limit: 20-25 years (IMA/INA/AFA), 20-27 years (OTA) - Starting salary: ₹56,100 (Lieutenant/Equivalent) + allowances = ₹80,000-1,00,000 - No negative marking in CDS writt...