Despite feeling quite likely that he would end up with nothing, he still took his weapon and hurried to a position that seemed somewhat inexplicable.
He didn't share his judgment with anyone, merely mentioning that he randomly chose a spot to block the enemy's retreat... since his track record was substantial, he also had the liberty to move freely.
After all, other snipers wouldn't believe in his intuition, nor would they believe someone could hit a target from 400 meters away—their experience so far hadn't shown anyone capable of such a feat.
Of course, they also didn't know about a type of scope that could magnify a target eight times or a rifle that could precisely shoot a bullet beyond 500 meters.
They were also unaware of small devices to calculate wind speed, and didn't know about telescopes with reticle measurements that could precisely judge distances.
