The story of Stonewall Jackson in the Shenandoah Valley illustrates a simple truth: what matters in war, as in life generally, is not necessarily how many men you have or how well supplied you are but how your enemies see you. If they think you are weak and vulnerable, they act aggressively, which in and of itself can put you in trouble. If they suddenly think you are strong, or unpredictable, or have hidden resources, they back off and reassess. Getting them to change their plans and treat you more carefully can by itself alter the war. In any struggle, some things will be outside your
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