The transport helicopter was first widely used by the US during the Vietnam war. the memorable UH-1 Iroquios "Huey" helicopter played a major role in the mobilization of the American ground troops. The UH-1 not only played the role as an transport helicopter, put served other functions, showing the versatilite of the transport helicopter. Today, transport helicopters perform important tasks in front-line battlefields and can still be modified to perform a variety of tasks. They have become one of the most indispensible items in modern mobile warfare.