The Piper Cub was a small, simple, light aircraft that was built between 1937 and 1947 by Piper Aircraft. With tandem (fore and aft) seating, it was intended for flight training but became one of the most popular and best-known light aircraft of all time.
Piper developed a military variant, variously designated as the O-59 (1941), L-4 (after April 1942), and NE (U.S. Navy). The variety of models, as well as similar, tandem-cockpit accommodation aircraft from Aeronca and Taylorcraft, were collectively nicknamed 'Grasshoppers' and used extensively in World War II for reconnaissance, transporting supplies and medical evacuation. L-4s were also sometimes equipped with lashed-on infantry bazookas for ground attack. These proved to be most useful during Operation Overlord.