This psychology helps explain why McClellan, having created a powerful army, was reluctant to commit it to all-out battle. He always feared, deep down, that the enemy was more powerful than he. And the Confederates, armed with the morale of victory, enjoyed an edge that went far toward evening the material odds against them in Virginia.16 Hence the paradox of Bull Run: its legacy of confidence both hurt and helped the South; the humiliation and renewed determination both hurt and helped the North.

