Ohnestly without the WWI ambulence so many more people whould of died or be pernamtley injusred . Think about this , 20 million people including cillvillians died in WWI . That is 89 of the total earth population right before the war in 1913 . Also they would transform passenger trains into an ambulense train , they were a third of a mile long ! The full train could hold 500 soliers that are either wounded or ill ! Alot of the goverment would make propaganda posters that try to get women to joing the res cross and drive motorized ambulences . Toward the end of the war they started using aircrafts as ambulence to get the injured out of the batle field .