The sweeping epic of the largest battle ever fought on American soil. In mid-July 1863, Union Lt. Frank A. Haskell wrote a vivid account in a letter to his brother. Words from Haskell and other soldiers on both sides re-create the action. Filmed in five states and in the Gettysburg National Military Park, the film shows seven full-scale battles. The film debuted on more than 100 PBS stations.