The American Civil War was the first modern war. It is true that the Crimean War, some eight years earlier, has resemblances with the American conflict. There is the awakening of public concern for the care of casualties, a concern which had grown with medical knowledge. But the Crimean War was fought in a small area. It was fought by professional soldiers—the British commander-in-chief directed operations from his private yacht to which he returned to dine and sleep every night—and the casualties, though heavy, were less than half of those suffered in America, where a million men died in the field, the hospitals and the prison camps. The Civil War involved everyone, the armies became conscript armies almost at once. The professional soldiers were put to the task of training the man in the street.