* Orphans should be adults who were orphaned during the war 10 years ago.
* They should have no surviving parents (although they might not both have died during the war).
* They have been recruited for this venture by a mysterious stranger.
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* What did your (mundane) parent do in the war?
* What have you done since the war, why hasn't this been entirely successful?
* What about you caught the stranger's eye?