The great help of being in the Army is to understand why are the armies clever in what they describe as emotional intelligence, making soldiers come to terms with the death of comrades by certain rituals.
For thousands of years, we did have death surrounding us, and we did have people die in the home. You would take care of your own end. You would do ritual processes, and you would be involved in it, and that's been taken away in the Western world.
The life of the dead is placed in the memory of the living.
Marcus Tullius Cicero
Rituals keep us from forgetting what must not be forgotten and keep us rooted in a past from which we must not be disconnected.