3/30 ideas for writing a historical Fiction

Well I honestly didn't read much since I had such a big book I had to choose a topic to read about, which was about Gettysburg. I haven't thought about much yet, but I already decided that I am going to be the General during that time and explain my adventure through the Gettysburg war. I am going to explain the ups and the downs of my adventure. The story is going to be based on some true facts, but I'm going to mix up the story a bit to make it better. The Generals objective is obvious, to win the battle. In order to win the battle he is going to have some very good stragety