The Kosciusko Reds were a minor league baseball team based in Milwaukee, Wisconsin. Representing the Polish south side of Milwaukee, the Kosciusko Reds played as a semi–pro team for many years before playing as members of the Independent Wisconsin State League from 1928 to 1930. The Milwaukee Red Sox continued as members of the Wisconsin State League in 1931 and 1936 and the 1932 Wisconsin-Illinois League. The Reds and Red Sox teams hosted home minor league games at Borchert Field.