Flettner Fl 282 Kolibri
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A Fl 282B awaiting delivery.
The Kolibri "Humming Bird" was the first helicopter put into mass production and the only helicopter to make any significant contributions in World War II.
Flettner Fl 282 V6 Kolibri aboard the minelayer "Drache", Aegean Sea, Winter 1942-43
In October, 1942, two Fl 282 helicopters were delivered to Triest with their personnel, including Cpt. Claus von Vinterfeldt, Flettner's pilot Fuisting, other pilot (his name is unknown) and three technicians. Since November, 1942 until January/February, 1943, the first helicopter Fl 282 V6 GF+YF had been employed as the recco' craft over Aegean Sea, basing upon improvised helicopter carrier Kriegsmarine's minelayer "Drach" ("Schiff 50", ex-Yuogoslavian "Zmaj").
The second Fl 232 - CJ+SC was a reserve machine that stayed ashore.
http://www.warbirdsresourcegroup.org/LRG/fl282.html