olitics by other means." - Clausewitz. Strategy Six Pack brings together six essential texts for military theorists: Machiavelli's The Prince The Art of War by Sun Tzu Battle Studies by Ardant du Picq Einhard's Life of Charlemagne Julius Caesar's The Gallic Wars On War by Carl von Clausewitz Centuries of tactical wisdom distilled into one awesome e-book. Military Science has never been more thoroughly represented in one single volume. "The supreme art of war is to subdue the enemy without fighting." - Sun Tzu.