What is this 1945 helicopter? Helicopter use in WWII?

What is this helicopter from 1945?

Is it on this List of Helicopters in WWII?

What action did helicopters see on the front or backbase during WWII?

I believe its this one. :cool:

And yes, it was the second one that had a link listed.

Asked and answered.

Yes, early Sikorsky. Barely seeing action in WWII, it was intended for recovery operations. It’s success made the Sikorsky single screw with tail rotor the most popular helicopter configuration to this day.

Yep. Sikorsky R-4. A YR-4B was first used operationally in a rescue in 1944.