The Military Medical Board classifies candidates into standardized fitness categories based on comprehensive clinical examinations:
- Category A (A1–A4): Absolutely fit for military service without restrictions. Eligible for airborne, reconnaissance, marine, and special forces units.
- Category B (B1–B4): Fit for military service with minor non-critical restrictions. Eligible for motorized rifle, artillery, transport, communications, and logistics units.
- Categories C, D: Unfit or temporarily unfit. Candidates with severe chronic conditions, communicable diseases, or acute traumas cannot be enlisted.