Military Aircraft of the 20th Century: Helicopters

description:

Providing exact numbers, specifications, and plenty of facts, Military Aircraft of the 20th Century provides an encyclopedic look at aircrafts used by any military force in the 20th century. This entry looks at helicopters, such as the Bell UH-1 Iroquois "Huey", Bristol 173, Sikorsky SH-3 Sea King, Sikorsky H-34 Choctaw, and many more. (1h 13m)