" The awareness that one was in the presence of such an insurgent came at a pheromonal level. He didn’t have to be brash or intimidating. If he had the right qualities, they carried through the air around him despite his quietude. Some men were fiery and motivational, leading with a barely restrained recklessness and a demeanor of perpetually fresh anger. Others were intellectual warriors, brains in circuit with the matrix in space where vectors flew toward other vectors and the results of battle followed from the nature of their intersections. The fighter’s way was elemental. It was not possible to cultivate it reliably in an academic meritocracy, or to gauge it by class rank. The woodsmen with their squirrel guns who beat the British at New Orleans rallied to Andrew Jackson’s readiness to fury, a scent that inspired fear, his instinct to abandon prudence and seize a sudden opening to kill. "

― James D. Hornfischer , Neptune's Inferno: The U.S. Navy at Guadalcanal