I recall a story of a general- whom I do believe was active in the Napoleonic Wars- would maintain readiness in his marching armies by surprising them with attack orders on redundant non-military targets. The point was small towns would be surprised by a sudden pouring of troops over their walls, who had been ordered to do so for no strategic reason. I cannot remember who this General was, but Carl von Clausewitz is my best guess. Help me out?