Army soldiers see object over Fort Benning, Georgia

Our Basic training company at Fort Benning, Georgia was doing night training on firing the 81mm mortar. We all looked up when this huge saucer shaped object floated from the south west to the north east It made no noise and had several irregular lights in what appeared to be port holes. The object was spinning in a clock wise rotation about one full turn every two minutes, Its speed seemed to be 10 mph and it appeared to be about a quarter mile in diameter and was about 500 ft above the ground. The object appeared to resemble a space station similar to to the one I saw in the movie "Close encounters of the third kind" If you remember the scene where Richard Dreyfuss was at the RR tracks and he looked up and saw this spinning space station type object. A master sergeant was mad at us for looking up.
Date is approximate.  PD