Every branch of the U.S military and all the major allied powers flew the miltary transport version of the Douglas DC-3, the C-47 Skytrain. The U.S. Navy version was the R4D. The British and the Australians designated it the Dakota (a clever acronym composed of the letters DACoTA for Douglas Aircraft Company Transport Aircraft). By the end of World War II, more than 10,000 had been built. For all of its official and unofficial names, it came to be known universally as the "Gooney Bird."