This is the book parents and teachers have been waiting for. In the same manner as this author's earlier book Johnny Get Your Money's Worth, this one explains to young people two important aspects of our war economy: (1) The needs of the home front in terms of raw materials, transportation, food, effort and morals, and (2) What they can do about it -- specifically: both the why and the how of salvage, of rationing, of doing without, of taking care of what they have. It isn't condescending either -- adults will learn a few things from it too. I wish the arrangement of material had been more thoughtful -- armaments and food are a bit scrambled together, making for some confusion. But on the whole it does a good job and a much needed one.