I get what you are trying to say.
There was no expectation to take the pill (take your own life).
None, regardless of religious affiliation.
About the 80’s. . .post-Vietnam the code of conduct was revised to allow you to resist to the best of your ability. . .that is all. Too many guys suffered horribly during Vietnam as they resisted to the point of death or crippling. The US changed the code so that honorable men would not be placed in that situation, to allow them to walk the resistance path but yet, not die and if broken, not be considered a failure. You were trained to resist until you could resist no more.
No one was expected to die.
You aren’t supposed to slit the throats of men who you capture alive, but some missions still call for such things.