You can use facts and statistics to support generalizations, to provide context, or to emphasize the importance of your topic, as student writer Ned Bishop does early in his paper.
Fort Pillow, Tennessee, which sat on a bluff overlooking the Mississippi River, had been held by the Union for two years. It was garrisoned by 580 men, 292 of them from United States Colored Heavy and Light Artillery regiments, 285 from the white Thirteenth Tennessee Cavalry. Nathan Bedford Forrest commanded about 1,500 troops.1
Establishing context