These categories of doctors mainly man the casualty and attends to emergencies to give medical aid in emergency. To deal withal Medico-legal and accident cases. To maintain accident register in proper order to keep good information of cases. To issue wound certificates and other Medico-Legal certificates. a doctor who works in a hospital in casualty (= the hospital department where people who are hurt in accidents or suddenly become ill go for urgent treatment) and is trained to deal with accidents or sudden illness: It was my day off after a busy week as a casualty officer in an inner-city hospital.