Way John Christopher wrights the TRIPODS trilogy like H,G  Wells meets John  Wyndham a diffident kind take on WAR OF WORLDS where the aliens have take over world  a 100 years ago by capping people at  age 14 a boy Will plans to leave before next capping day because of his brother Jack not same person as before and starts a journey with Henny  and  makes friends with Beanpole from France to get to white 

mountains