The Battle of Heilbronn was a nine-day battle in April 1945 during World War II between the United States Army and the German Army for the control of Heilbronn, a mid-sized city on the Neckar River located between Stuttgart and Heidelberg. Despite the impending end of the war, the battle was characterized by very firm German resistance and the presence of various Nazi Party auxiliaries among the regular German troops. Following days of house-to-house combat, troops of the U.S. 100th Infantry Division captured Heilbronn and the U.S. VI Corps continued its march to the southeast.