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In page Roza Shanina:

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From her time at the military academy, Shanina became known for her ability to score doublets (two target hits made in quick succession).[citation needed] During one period she crawled through a muddy communications trench each day at dawn to a specially camouflaged pit which overlooked German-controlled territory.[20] She wrote, "the unconditional requirement—to outwit the enemy and kill him—became an irrevocable law of my hunt".[21] Shanina successfully used counter-sniper tactics against a German cuckoo sniper hidden in a tree, by waiting until dusk when the space between the tree branches would be backlit by sunlight and the sniper's nest became visible.[22] On one occasion, Shanina also made use of selective fire from a submachine gun.[23]