Medical evacuation, often shortened to medevac or medivac, is the timely and efficient movement and en route care provided by medical personnel to wounded .\rbr\rbrThis is a slightly different version of Part iV of the For the Soldiers on the Ground Army Aviation series. This story focuses on the courageous efforts of the .\rbr\rbrDust Off Drawing on its first experiments with helicopters in Korea, the Army in Vietnam came to rely almost entirely on the helicopter for medical evacuation.\rbr\rbr National Geographic Documentary | US Military & Super Copters HD | Military Documentary Channel A military helicopter is a .