During the Crusades of the 11th century, the Knights of St John received instruction in first aid treatment from Arab and Greek doctors. The Knights of St John then acted as the first emergency workers, treating soldiers on both sides of the war on the battlefield and bring the wounded to nearby tents for further treatment.
The concept of ambulance service started in Europe with the Knights of St John, at the same time it also became common practice is rewarded with a small reward to be paid to the soldiers who carry other wounded soldiers for medical care.
French surgeon of the Grand Army, Baron Larrey Dominiquie creating a special corps of medical first official in 1972. Trained personnel equipped with mobile equipment out of the hospital to provide first aid to wounded soldiers and / or bring them back on a stretcher, and a cart to the hospital. Ambulances are equipped with engines that have been used since the beginning of the 20th century. In the 1950s the United States pioneered helicopter-ambulances during the Korean War. In 1968, St Vincent's Hospital in New York City launch the first mobile coronary care unit.
