He's not that kind of fanatic. His fanaticism encouraged him to want to take the war to civilians on the Union side because he saw them as infidels, his tactics, however, show a preference for rapid maneuvers and flank attacks, which are a sign that in fighting his religious fanaticism did not affect how he did it. It did, however, influence him to exhaust his men and goes a long way to explain why Jackson had a continual turnover of officers in his division and quarreled with his subordinates as much as Braxton Bragg did. If he screws up due to that it'd be in an attempt to sack the Hell out of Maryland and Pennsylvania in the expectation Yamamoto-style that the USA must of itself surrender as Yankees are cowardly wretches.