The New International Encyclopædia…
“ By this means thousands of wounded soldiers were removed with comparative comfort from the battlefields of the West to well-equipped hospitals in the North. A hospital car provided with a sort of swinging bed or hammock was invented by one of the members of the commission and was put into general use in moving wounded soldiers from the battlefields to the general hospitals. During the war 225,000 sick and wounded soldiers were transported in hospital cars from various battlefields in the East and West to the general hospitals. ”
