"Everything is very simple in War, but the simplest thing is difficult." -Carl von Clausewitz, On War, 1832 On War is Carl von Clausewitz' masterpiece on war and military strategy, which was written between 1816 and 1830 and was published posthumously by his wife Marie von Clausewitz (n e von Br hl) in 1832. Three main concepts of war stand out: war should be seen as an instrument of politics; the military objectives...