Union Pacific Big Boy 4004

Union Pacific Big Boy 4004
electric trains
Image by cliff1066™
The Big Boys rendered important service in the Second World War, especially since they proved so easy to fire that even a novice could do a fair job. During the war, after German agents filed reports that the Americans had giant steam engines that were moving huge trains full of vital war material over steep mountain grades at high speed, their reports were dismissed as "impossible". Their performance in moving a huge volume of war material throughout WWII was repeatedly cited and the Big Boys are generally acclaimed as having made a huge contribution to the war effort.