...of mounted videttes, and, behind these, on a little knoll, a picket reserve, with their horses tied to trees. We waited some time to give a chance to General Gregg who had crossed on our right, and General Kilpatrick on our left, to get into the proper positions. Then General Pleasonton ordered an advance, and, in a few moments, quite as if by magic, the open country was alive with horsemen; first came columns ...