Gasheva volunteered for service in September 1941. She graduated from a navigators' course at the Engels Military Aviation School of Pilots in February 1942. Gasheva was posted to the all-female 588th Night Bomber Regiment of the Red Air Force, then forming in Engels. She fought in combat from May 1942, fighting in the Battle of the Caucasus. In February 1943 the regiment became the 46th Guards Bomber Aviation Regiment. Gasheva fought in the Air Battles in the Kuban, the Kerch–Eltigen Operation, the Crimean Offensive, the Mogilev Offensive, the Belostock Offensive, the Osovets Offensive, the Mlawa-Elbing Offensive, the East Pomeranian Offensive, and the Battle of Berlin. Gasheva's aircraft was shot down twice. On the first occasion, Gasheva and her pilot reached Soviet lines, but on the second they bailed over minefields and pilot Olga Sanfirova was killed when she stepped on an anti-personnel mine. During that incident, Gasheva landed on an anti-tank minefield several hundred meters to the South of Sanfirova; after making it back to her regiment she began flying with Nadezhda Popova. By the end of the war she flew 848 combat missions as a navigator of the Po-2 light bomber; after accumulating 823 sorties by December 1944 she was nominated for the title Hero of the Soviet Union, which she received on 23 February 1945. Gasheva ended the war as a senior lieutenant. She married bomber pilot Mikhail Pliats at the front.
Postwar
Gasheva served with the regiment in the Northern Group of Forces until October 1945. Postwar, Gasheva and Pliats had a son, Vladimir, and a daughter, Marina. Pliats reached the rank of colonel. In 1952 Gasheva graduated from the Military Institute of Foreign Languages, becoming a senior lecturer at the Foreign Languages Department of the Malinovsky Military Armored Forces Academy. She worked there until August 1957. She transferred to the reserve in December 1956 with the rank of major. From 1961, she worked as a senior editor in the Voenizdat Bureau of Foreign Military Literature, and between 1967 and 1972 she was a senior editor in the Office for Publication of Military Literature in Foreign Languages of the USSR Ministry of Defense. She lived in Moscow and was promoted to lieutenant colonel in 2000 before she passed away on 1 May 2012 and was buried in the Vostryakovsky Cemetery.