Dog Jack

Dog Jack is a 2010 film based on the book of the same name by Florence W. Biros.
The story revolves around an escaped slave boy named Jed (Ben Gardner) who joins the 102nd Pennsylvania Regiment during the American Civil War. He is accompanied by his dog Jack (the namesake of the story) who becomes the mascot of the regiment during the war.
The film was shot mostly in and around the borough of Darlington, Pennsylvania, United States just outside the city of Pittsburgh. Other locations included North Freedom, Wisconsin, Mt. Pleasant, Iowa, and the suburbs of Chicago, Illinois.