Viewpoints
A number of authors have presented stories with political messages of varying types as major or minor themes of their works.
David Drake has often written of the horrors and futility of war. He has said, in the afterwords of several of his Hammer's Slammers books (1979 and later), that one of his reasons for writing is to educate those people who have not experienced war, but who might have to make the decision to start or endorse a war (as policy makers or as voters) about what war is really like, and what the powers and limits of the military as an instrument of policy are.
David Weber has said that:
"For me, military science-fiction is science-fiction which is written about a military situation with a fundamental understanding of how military lifestyles and characters differ from civilian lifestyles and characters. It is science-fiction which attempts to realistically portray the military within a science-fiction context. It is not 'bug shoots'. It is about human beings, and members of other species, caught up in warfare and carnage. It isn't an excuse for simplistic solutions to problems."
Read more about this topic: Military Science Fiction