One of the best things that you can do in order to be a good writer is to be a good researcher. You can write about any topic that you want, but it will only be believable if you understand what you’re writing about well enough to make it seem realistic. You can make your scenes more realistic by adding rich detail. For this prompt, do some Googling about what your character might be experiencing. Select a country at war and try to find some first hand accounts of what the people there are going through.