The term 'Yankees' Foes' can be summarized by two crossword solutions: Jays (4 letters) and Rebs (4 letters). The Toronto Blue Jays are a professional baseball team based in Toronto, Canada, and are a major rival of the New York Yankees. The Rebs refer to the Confederate States of America, which was a group of 11 southern states that seceded from the United States during the American Civil War. The Confederate States were opposed to the Union, which was led by the Yankees.