During which war was the first extensive use of jet aircraft and helicopters observed?

The Korean War marked the first extensive use of jet aircraft and helicopters in military operations. During this conflict, which lasted from 1950 to 1953, the United States and its allies relied heavily on jet fighters like the F-86 Sabre and the Soviet MiG-15. These aircraft showed the advantages of speed, altitude, and maneuverability compared to the piston-engine planes used in earlier conflicts.

Additionally, helicopters played a crucial role in logistics, troop transport, and medevac (medical evacuation) during the Korean War. The Bell H-13 Sioux, for instance, became iconic for its use in medical evacuation missions and reconnaissance, demonstrating the versatility of rotary-wing aircraft in combat and support roles.

The advances in aviation technology showcased during the Korean War set a precedent for future conflicts, further integrating jet aircraft and helicopters into military operations on a broader scale. This focus on air mobility and air superiority paved the way for future developments seen in subsequent conflicts, including the Vietnam War.