Duty vs love part one-life and death

Duty is an obligation.  Love is a feeling.
The relative strengths of these two
show the complexity of the spirit
a writer must weave the two into his story
to create conflict and bring the reader into the character's lives
This is not easy because they must be balanced
There are also different types of love and duty
There are different degrees of love and duty
Love bears some sense of duty with it almost always
while duty may exists in the absence of love
one is a matter of logic
the other of devotion
and perhaps that is inaccurate unless you know for sure which is which
great literature will often pit one against the other
an example from a movie comes to mind
two brother meet across the battlefield in the civil war
one unable to shoot the other
or perhaps he drops his gun to carry his wounded brother to safety
it is possible that both exist in different movies
It is possible to kill for either love or duty
one is considered inappropriate in almost all cases
the other is considered heroic in some circumstances
you can sacrifice for love, but you can't kill for it
you can sacrifice for duty, in some cases you are compelled to kill for it
both have an air of tragedy
killing for justice in noble
killing for love criminal
killing for duty is neither noble for criminal in war
but killing for duty in other situations is
Hence their are different types of duty
and there are different types of love
They don't balance well, one against the other
Part 2 will balance comfort against the two