A growing number of veterans are trading their uniforms and weapons for Bucky Badger sweat shirts and books, transforming this campus that was once a hotbed of war protest. As thousands of veterans return home from Iraq, Afghanistan and elsewhere, many are taking advantage of generous educational benefits through the G.I. Bill. And as veterans flood campuses around the United States, theyâ??re changing and diversifying the student population in ways not seen since the end of World War II.