The famous British nurse known for her work during the Crimean War is Florence Nightingale. She is often regarded as the founder of modern nursing due to her pioneering practices in healthcare and sanitation. Nightingale gained fame for her efforts in improving the conditions of military hospitals during the war, where she significantly reduced the death rate through her emphasis on cleanliness and proper nutrition. Her commitment to nursing and healthcare reform not only transformed military medical care but also inspired the establishment of nursing schools, elevating the profession’s status and contributing to advancements in patient care and public health.