Florence Nightingale formed the first nucleus of a recognised Nursing Service for the British Army during the Crimean War in 1854.
In the same theatre of the same war, Professor Nikolai Ivanovich Pirogov and the Grand Duchess Yelena Pavlovna originated Russian traditions of recruiting and training military nurses – associated especially with besieged Sevastopol (1854–1855).
These nurses are needed at all military bases, active war zones, clinics and front lines – not always on United States territory.
For example, a branch known as the Air National Guard, allows an individual to join as enlisted and work as an Aeromedical Evacuation Technician while finishing their BSN degree.
These nurses serves in Afghanistan between 2001 and 2014 and it was found that nurses often experienced many psychological stressors such as lacking family support, suffering from mental health issues, experiencing separation anxiety, missing their families and friends, feeling unprepared and not able to take care of seriously injured patients, and nurses found it emotionally difficult taking care of terminally ill patients.