A group in Griswold has lost another battle in the war over a Civil War-era cannon.In 1911, the federal government gave a cannon to the Grand Army of the Republic post in Cass County. Nine years later, the soldiers turned the cannon over to the Griswold American Legion. In 1998, the American Legion tried to sell the cannon to a Pennsylvania collector, but two groups sued to prevent the sale. The Sons of the Union Veterans of the Civil War of Griswold and the Save Iowa Civil War Monuments Foundation argued the cannon had been dedicated for public use, and therefore could not be sold. A district court rejected the argument, and the Iowa Supreme Court today upheld that decision, which clears the way for the sale unless the two groups take the case to the U-S Supreme Court.