Empire at War is a lavish book detailing famous battles in Warhammer. Each battle is examined, discussed and dissected: it's historical context, the main players, opposing tactics with illustrative maps, armies and equipment, important events and how the battles panned out. The writer concludes with lessons to be learned, digresses the aftermath of the battle and pontificates on what may have happened had the battle gone the other way. Accompanying the words is loads of fabulous art and battle maps.