well lets see,lots of them in vietnam,,there was the f4u corsair,,,, c47,,,,f6f hellcat,,,,tbm,,,,b25's,,,,spitfire,,,,,you will find most ww2 planes were still in use during vietnam,,,we had so many of them,,we had to use them all up some how ,,,they used the he111 in spain till 1967,,lol,,,,,just goes to show we dont faze out old stuff that fast,,lol