The aim of the research was to analyse the experience of medical volunteers during World War II in the context of nursing history. Oral history data used in the study consisted of 30 interviews with Finnish wartime medical volunteers, known locally as Lottas. Interview data were analysed both thematically and by using the oral history method. Based on the analysis, the Lottas' experiences during wartime nursing became the leitmotif of this study. The main themes consisted of the following: ‘taking care (...) of wounded and ill patients', ‘taking care of dying and deceased patients’, ‘taking care of mentally ill and psychoactive substance‐addicted patients’ and ‘confronting ethical and role dilemmas in nursing’. The interview results showed that the Lottas' duties were sometimes more demanding than basic nursing tasks and that their education was not adequate for the challenges that they faced. In this paper, the terms Lotta, medical Lotta or medical volunteer are used interchangeably and refer to people who were assigned to medical volunteer tasks, regardless of whether or not they were trained. It also includes junior members of the organisation who served as medical volunteers as minors, with special permission. (shrink)