I'm writing a war novel. Although the two sides will meet as friends decades later in the story, I'm concerned that the details of the war will offend the other side. I'm going to depict the battle in such details that the reader would learn the horrors of war. The other side would lose much more men. It's meant to help the reader understand how someone would get PTSD. I'm afraid that (a) certain readers might get offended to have their country depicted as the enemy, and (b) the details of the sufferings might anger them. Do any of you ever worry about similar things?