"The ideal troop-carrier combat transport would appear to be a large transport of the twin-boom type for which personnel, artillery, and vehicles could be dropped. It should have a range of two thousand miles and should be equipped with self-sealing tanks, pilot armor, and a retractable track-laying undercarriage. This last feature would permit its landing and take-off in pastures and cultivated areas. It would thus be able to enter the airhead early in an operation, landing and taking off from areas normally suitable only for gliders".
---Airborne Warfare by General James M. Gavin, 1947