Aug. 7 was Purple Heart Day, a time to honor and remember service members who were wounded or killed by an instrument of war in the hands of an enemy or while prisoners of war.The following are a few stories of the nearly 2 million who were awarded the medal.Marine Corps Lt. Gen. Lewis Burwell “Chesty” Puller was wounded Nov. 8, 1942, during the Battle of Koli Point, a signifi...