Which conflict was the first to see the wide use of helicopters?

The Korean War is recognized as the first conflict to see the extensive use of helicopters in military operations. During this time, helicopters such as the Sikorsky H-19 Chickasaw were utilized for various purposes including troop transport, medical evacuation, and logistical support.

The unique capabilities of helicopters, such as vertical takeoff and landing, enabled them to operate in areas that fixed-wing aircraft could not reach easily, allowing for rapid response in combat situations and enhancing the mobility of ground troops. This period marked a significant evolution in military strategy, as the use of helicopters became an essential component of aerial and ground operations.

While the Vietnam War later popularized the use of helicopters even further with models like the Bell UH-1 Iroquois (commonly known as the "Huey"), the innovation and initial large-scale use originated during the Korean War. Thus, this conflict set the stage for modern helicopter warfare.