A look at the iconic combat aircraft, 90 years on from its first flight, and why it was the people's plane.

The story of how British innovation and American production combined to create the Merlin-powered P-51 Mustang, the long-range fighter that secured air superiority over Germany in WWII.

Add Yahoo as a preferred source to see more of our stories on Google. GettyImages 528673160 Michael Cole Corbis via Getty Images 2 Powerful and dependable, the Rolls-Royce Merlin aero engine was ...