Natkirurg Johann Bőnisch i njegovo pismo supruzi Juliji s ratišta 1849. godine

The paper presents professional and personal information on head surgeon Johann (Ivan) Bönisch, who was active in Bjelovar as hospital surgeon and district physician. He worked as head surgeon with permanent office in both regi-ments belonging to Bjelovar – first in Đurđevac, and later in Križevci. The paper includes the integral letter Bönisch sent to his wife Julia in translation from the German language. The letter was written in 1849 in the Sirmium battlefield, where he worked as battalion surgeon. Using emotional literary expression, he offers information on army activities, and sanitary and military circumstances in battlefields in the mid-19 th century.