Вы сама и не путайтесь///"A sniper is a highly trained marksman who operates alone, in a pair, or with a sniper team to maintain close visual contact with the enemy and engage targets from concealed positions or distances exceeding the detection capabilities of enemy personnel. These sniper teams operate independently, with little combat asset support from their parent units. Snipers typically have highly selective and specialized training and use high-precision/special application rifles and optics, and often have sophisticated communication assets to feed valuable combat information back to their units.///В нормальной армии нет никакого разделения этих понятий.