No other human activity is so continuously or universally bound up with chance. And through the element of chance, guesswork and luck come to play a great part in war.
Carl von ClausewitzThe invention of gunpowder and the constant improvement of firearms are enough in themselves to show that the advance of civilization has done nothing practical to alter or deflect the impulse to destroy the enemy, which is central to the very idea of war.
Carl von Clausewitz