During the Civil War, a favorite way of disrupting an enemies' supply line was to tear up his railroad tracks. After removing the rails from the track, the rails were often twisted, in an attempt to make them unusable in the future. The picture above was taken in about 1862, and it shows a large pile of these twisted rails. It also shows an ingenious device that was developed to straighten the rails. The device is a combination of a large jack and blocks, which was used to remove the bends from the rails.