Do you like the book Ender's Game?

"Enders Game" message is that in any war, there are two sides to the conflict. There are no guarantees that the motivations of a government are pure or evil, or if they really have the best interests of their citizens in mind. At the end of the novel, the main character, a military protege, feels the full impact of what he has done and must somehow find a way to forgive or excuse his actions.