Coffee Break Training: Command and Control Series: Characteristics of the Incident Command System: Medical Unit Leader [open pdf - 100KB]
"The Medical Unit Leader or MEDL, under the direction of the Service Branch Director or Logistics Section Chief, is primarily responsible for the development of the Medical Plan (Incident Command System (ICS) Form 206), obtaining medical aid and transportation for injured and ill incident personnel, establishment of Responder Rehabilitation, and preparation of reports and records."
Coffee Break Training - Command and Control Series No. CC-2014-5
United States Fire Administration: http://www.usfa.fema.gov/