Watch Union Bound (2016) HD Full Movie Free on SolarMovie. Watch Union Bound (2016) online free. Sergeant Hoover went to war to preserve the Union. After being captured and sent to a prisoner of wa...Sergeant Hoover went to war to preserve the Union. After being captured and sent to a prisoner of war camp, he understood what it was to be kept against his will. Together with a friend he escaped and, aided by slaves, made it to freedom.