sidevalve (#10972),
..."perhaps Danny can answer that one"...
Yes, Danny can - at OTU in 1942 absolutely none ! (Apart from the standard: "All you're obliged to tell them is your name, rank and number").
In Burma later, there was really no point. Either the Jap got hold of you or you managed (with the help of villagers) to walk back out (many did).
If the Jap got you, you did not have to fear imprisonment - as a rule they chopped the heads off aircrew on the spot.
Managed to avoid all the uncomfortable "Escape and Evasion" exercises that came my way in later years. Nearest I ever came to one postwar was on leave in Oberammergau: the RAF had one running in the snowy woods nearby, and sometimes the unfortunates "escaped" from their Course and crept into town for a warm-up and some grub.
Once again, sidevalve, our thanks for opening yet another line of nostalgia in this our hydra-headed Thread. Pull your chair nearer to the cyberstove and give the fire another poke ! We are all ears !
Danny.