мистика

http://www.youtube.com/watch?v=rWlcEIQbS7o

О какой мистике они говорят?
спасибо

It must be the sergeant is saying farewell to his lieutenant before the battle, in case they never meet again for one of them might get killed. The lieutenant cheers him up by ordering to quit being superstitious.
Мистика equals суеверие there.