I am currently writing a war story written from different perspectives on both sides of the conflict. Every primary character of the story has their own side story with a family, life, etc., yet they never come in contact with one another directly with the exception of the war itself. I also want to put emphasis on a character's death, so to do so I was thinking of ending their specific story the moment they get blown to bloody bits by a hand grenade or something along those lines. I was planning to convey the tragedy of war within the way how the story is told in tangent with the content.
Example: Say one of the characters is called to active duty a few weeks after realizing that his child has a terminal illness. Before he leaves, he makes a promise to the child that he will return. His camp is ambushed by the opposing army a few weeks before his service is over, and he ends up a casualty after a stray bullet beheads him. The story never returns to his surviving family for the rest of the book in order to portray that he really is dead.