On August 25, 1944, the French 2nd Armored Division, attached to Patton's 3rd Army, outraces the US 4th Infantry Division into the streets of Paris, liberating the city after 49 months of Nazi occupation. For the sake of speed, European theatre commander Dwight Eisenhower had ordered Patton to bypass Paris, but changed his mind after General Charles de Gaulle warned him that leaving the city's liberation to the French Resistance could cause the country to fall to Communist influence after the war. To his credit, General Dietrick von Choltitz, commander of the German garrison, defied Hitler's orders to blow up historic landmarks before evacuating. On August 25, 1950, with strikes by two major railroad unions being threatened, President Harry Truman orders government control of the nation's railroads by the U.S. Army. In the days before construction of the Interstate Highway System, railroads were critical to the nation's transportation and defense infrastructures. The Brotherhood of Railroad Trainmen and Order of Railway Conductors would not return to work until May 1952.