Here. This is topical since the author is a) my father, and b) the second editor on my G.I. Joe book.
Terence T. Finn worked for NASA and the US Senate. Later he spent eight years and read 150 of books to bring you America At War. Each chapter covers one war we’ve fought and ends with a series of questions and answers (Did we have to drop the bomb on Hiroshima?). Though the cover design makes it look like this is for adult males who watch the History Channel, it’s written for everyone — students, history lovers, lapsed history lovers, and the curious.
Fun fact: I indirectly gave my dad the idea for the cover design. My highest and most biased recommendation! And if you’re in Somerville, MA, you can buy it at my store.