20 weapons of war.

Which has wreaked more havoc through history: a crossbow or a cannon? Find out with this mash-up of famous military weapons from throughout history. Each of the 20 subjects features a description, color illustration, and a sidebar of rankings in key categories. Friends flip to random pages and then (3z(Bbattle(3y (Bone another in a chosen category. Covers the history of key military technology from ancient to modern times.