Most RAF Germany aircrew attended the winter survival course at Bad Kohlgrub.in Bavaria. This included 5 days skiing training, 3 days of survival in the very cold woods. Each evening there were lectures on survival, resistance to interrogation etc. The final piece was 24 hours of escape and evasion, pursued by German special forces. If you escaped successfully a helicopter took you back for a hot springs bath. If you failed you got put in a cage to see if you had absorbed the resistance to interrogation lectures!!