Often overlooked in the story of America's experience in the Second World War was the vital role the transportation industry played in galvanizing the many diverse parts of the nation's war effort.
When factories ceased making cars and trucks for the consumer market in favor of trucks and tanks for the military, and when gasoline supplies became subject to severe rationing, railroads became the essential web of transportation.
carrying troops to hauling cargo, the American railroads were never so
crowded. And the railroad companies themselves often used posters to boast
of their vital contributions to the war effort.