If one has gone through a war with various stages of prolonging shock.
One who fights in battles
and wars, unaware
of how horrifying it really is, only
to find themselves immenesly frightened; frightened by such as a clattering, a rustling, adrenaline
or a quickly-moving visual image
or hallucination (Note, the hallucination may happen from the war anyway. Flashbacks, what have you. They
are more relevant than non-war fighters.)
My great granfather was a shelder... he was under so much stress, and had so much shell shock
that he ended
up beating hell
out of my father; even though
he was an asshole to begin with and the only way to solve
a problem to him was by force.