Florence was sent to Üsküdar’s Selimiye Barracks (then known as Scutari) in 1854 to tend to soldiers wounded in the Crimean War. The conditions she found at the hospital were appalling and death rates astronomical. Describing the unsanitary wards, she wrote that patients were "covered with filth to a degree and of a kind no one could write about; their persons covered with vermin." Determined to lower mortality rates, she set about cleaning the wards. This reduced the death rate by 60 percent and lead to her being known as the "Angel of the Crimea." The hospital still stands in Üsküdar and is used by the First Army as its Peace Headquarters, though visitors can tour a museum dedicated to Florence in the Northwest tower. Security is high, as the barracks are still used as a military base, and visits must be booked in advance.