"shooting classes" likely = weapons handling/safety, not marksmanship
just like in war, being a good marksman is less important (unless you're actually a marksman or sniper) than planning. Western infantry use fire and maneuver (pin them down and neutralize their cover by flanking) to destroy the enemy, not single well aimed heaRABhots like in video games. He applied all the correct principles of war. He trapped them, canalized them, even used deception.