Vietnam conflict: low tech vs high tech, geography, a photo by trudeau on Flickr.
Helicopters called the Cobra, the Huey and the Chinook epitomized the high tech wealth of US forces in the Vietnam conflict. They were armed with rockets, cannons and machine guns.
US soldiers also used radio phones in the field - forerunners of the cell phone. In addition to copters, jet fighters and B-52 bombers were used against the North Viets.