No matter whether the OH-13 just isn't initial practical halicopter, it offers truly end up being the most typical choppen the fifties and sixties world-wide. Oryginally utilized by the U.S. Army to evacuate through the Korean War, the Sioux finished up being down the road present in different variation for reconnaissance missions. From the beginning the Vietnam War a few dozen Sioux ended up being indeed used and through midsixties the OH-13 wound up being implemented for training use. In European countries it absolutely was built under license in Italy and britain. It was distributed to virtually all NATO Force. To-day the Sioux often popular for civilian use and authorities solution in lots nations.