Snipers who are mathematicians.
But the appearance of Yemeni snipers on the Taiz front. The mercenaries of the Islah party, who die and perish on this front in the hope of a sweet deal (for their corrupt leaders), have been captured by the patience of the Yemeni armed forces. Yemeni snipers are in force in one area and on one side.
The interesting thing about the skill of these snipers is where the wind blows fast and the Yemeni sniper's distance to the target is at least one kilometer! The calculation of wind speed, the relationship between the height of the sniper and the target and the type of cartridge used, the effect of gravity in the mountainous area for the sniper made him a mathematician. You have to be able to calculate all these things and then shoot because there is no second chance.