My darling sister-in-law Havilah suggested this book, and I am super glad I read it, and when I looked online at IMDb and saw they were going to make a move of it, I almost cried with happiness! Plus, HARRISON FORD IS IN IT!!!!!
It's perfect for him-- a war with aliens on another planet? Potentially typecasting, but thats ok.
The book is about a genius little boy Andrew (who goes by Ender) and how he progresses through different schools very quickly, with the hope that he will be the next great commander. A few twists and turns, interesting relationship with his brother (who always threatens to kill him and his sister?) but really good.