Grade 7-9–Military buffs will be delighted with this series, which could also serve as a reference work. The chronologically arranged titles devote a page to each weapon. A large-font title at the top of the page is followed by a one- or two-sentence statement concerning the subject's place in history, and is usually followed by a list that includes country of origin, crew, type, launch date and displacement (in Warships), range, and weight. The narratives describe why and when the type of vehicle was created, its advantages and disadvantages, when and where it served, countries that may have purchased or license-built it, and when it was removed from service. Each entry contains a detailed two-dimensional color drawing and black-and-white or color photo of the featured vehicle (sometimes, in the case of ships, photos portray a sister vessel); both are accompanied by extensive captions.