A space marine commander, an inquisitor and a comissar are showing off about their soldiers. Then the inquisitor points a sister of battle and says:
-Sister, go to that tyranid nest with your gun and bring me a carnifex head
-Yes, Milord-
Some time later, the sister comes back half dead
-Here you are, Milord
and inquisitor says: you see? this is courage
The Commander points a space marine and says:
-Brother, go to that tyranid nest nude, and with your hands tied to your back
-Yes, brother
Half an hour later, the space marine comes back, crawling with no legs
-Here you are, Brother
and the commander says: you see? this is courage
Te comissar looks at them, points an imperial guard and shouts:
Soldier! undress yourself, take a stick, go to that cave, bring me three carnifex alive, and go with your eyes closed and singing the imperial guard march!
SIR! FUCK YOURSELF, SIR!
You see? that is courage...