transportation of farm products. The vast geography made for difficult Union logistics, and Union soldiers were used to garrison captured areas and protect rail lines. But the Union Navy seized most of the navigable rivers by 1862, making its own logistics easy and Confederate movements difficult. After the fall of Vicksburg in July 1863, it became nearly impossible for all but small military units to cross the Mississippi with Union gunboats constantly on patrol. The Eastern and Western parts of the Confederacy were thereafter never satisfactorily connected. Railroads The outbreak of war had a depressing effect on the economic fortunes of the Confederate railroad industry. With the cotton crop being hoarded in an attempt to entice European intervention, railroads were bereft of their main source of income. Many were forced to lay off employees, and in particular, let go skilled technicians and engineers. For the early years of the war, the Confederate government had a hands off approach to the railroads. It wasn't until mid-1863 that the Confederate government initiated an overall policy, and it was confined solely to aiding the war effort. With legislation authorizing "impressment" (commandeering) that same year, railroads and their rolling stock came under de facto control of the military. At the beginning of the war (1861), the Northern states included 20,000 miles of railroad while the Confederate states had 9,000 miles (1,700 miles total in the three border states of Missouri, Kentucky and Maryland). The Confederate Army of the Shenandoah used their railroad system effectively at the First Battle of Manassas (Bull Run) on July 21, 1861. Confederate reinforcements under Brig. Gen. Joseph E. Johnston arrived from the Shenandoah Valley by railroad and the course of the battle quickly changed. Gen. Braxton Bragg also effectively used the Southern railway system to amass forces in central Tennessee against the Union forces of Gen. Don Carlos Buell in July, 1862. The rail system was used to move some 35,000 men down the length of the state of Mississippi, then across Mobile Bay to Mobile, Alabama and then up the length of the state of Alabama arriving finally at Dalton, Georgia. This was a total distance of about 766 miles and involved "more than half a dozen" railroads. This circuitous route had to be used because the Union Army controlled a key railroad which would have offered a more direct route. According to Jean Edward Smith, "Bragg had