"Many years ago, as a cadet hoping some day to be an officer, I was pouring over ‘Principles of War,’ listed in the old Field Service Regulations, when the Sergeant-Major came up to me. He surveyed me with kindly amusement. ‘Don’t bother your head about all them things, me lad,’ he said. ‘There’s only one principle of war and that’s this. Hit the other fellow, as quick as you can, and as hard as you can, where it hurts him most, when he ain’t lookin’!"
– Sir William Slimi