This is Erika Szeles a young soldier in the Hungarian Revolution.
"Szeles was born to Jewish parents in 1941 and raised solely by her mother after her father’s death in a German concentration camp.
When Hungary’s revolution against the Soviet Union began on Oct 1956, she was 15 years old. When her boyfriend formed a resistance group with some fellow students she chose to join them. She quickly learned how to use a sub-machine gun and fought alongside the group in several skirmishes with Soviet soldiers".
"The iconic photo above of Szeles holding her sub-machine gun was taken around Nov 1, 1956. A few days afterward she was approached by friends who, knowing that Russian divisions were pouring into Hungary, feared for her safety. They argued that she was too young to be fighting and she agreed to put down her gun and to instead serve the resistance as a Red Cross nurse.
On Nov 8 the resistance group she was with became involved in a heavy firefight with Russian soldiers in the center of Budapest. When a friend of hers was wounded she ran forward to help him. Despite being unarmed and wearing a Red Cross uniform she was gunned down and died instantly. She was buried in the Kerepesi Churchyard in Budapest.
She is recognised as a martyr of the Hungarian Revolution".