Alpha Bravo Charlie: The Military Alphabet , by Chris L. Demarest
While I generally don't intend to blog children's books here, this one has become a favorite of our whole family. My five-year-old memorized the military alphabet and astounded everyone. One day, I was doing some alphabet flashcards with my three-year-old, and was surprised to learn that he had learned a great portion of it, as well. The illustrations are gorgeous.