Final answer:
Cadres are not allowed to have closed-door discussions with trainees in the military.
Step-by-step explanation:
No, it is false that cadres are allowed to have a closed-door discussion with a trainee as long as a 3rd party is present. In the context of the military, cadres are typically higher-ranking officers or non-commissioned officers who play a supervisory role in training and mentoring trainees. However, discussions with trainees are usually conducted in an open and transparent manner, with multiple trainers present, to ensure fairness and accountability.