The picture of the vintage Indian Air Force Mi-4a Hound flying in the high lands of Ladakh was taken in 1951. The pilot of this particular helicopter would drop grenades by hand and manually fire SMGs thru the cockpit as there were no pilons to load weapons on it.
This is the Indian Air Forces' LCA (Light Combat Aircraft). It is believed to be the worlds most smallest and the lightest combat aircraft with a dry weight of 1150kg! Max speed at 2.3 Mach!
U.S. Army Boeing-Wichita (Model 451) YL-15-BW Scout liaison aircraft, msn 20012, U.S. Army serial number 47-432. This two-seat aircraft featured maximum visibility for the observer and good flight control at low speed. It could also be disassembled and transported by truck. One prototype was built and ten prototypes but after tests, the Army rejected the design and transferred the ten YL-15s to the U.S. Forest Service and the Department of the Interior which operated them with civil registrations. An order for 47 L-15-BWs was cancelled.