At one time, because of its position at the foot of the lower rapids of the Mississippi, Keokuk was known as the Gate City. During the American Civil War, Keokuk became an embarking point for Union troops heading to fight in southern battles. Injured soldiers were returned to Keokuk for treatment, so several hospitals were established. A national cemetery was designated for those who did not survive. After the war was over, Keokuk continued its expansion. A medical college was founded, along with a major-league baseball team, the Keokuk Westerns, in 1875.