Whether or not the OH-13 seriously isn't initial practical halicopter, it provides certainly turn out to be the most typical choppen the fifties and sixties world-wide. Oryginally employed by the U.S. Army to evacuate through Korean War, the Sioux completed up being later on contained in different variation for reconnaissance missions. From the beginning the Vietnam War a couple of dozen Sioux finished up being certainly utilized and through midsixties the OH-13 finished up being implemented for training usage. In countries in europe it had been 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.