Related Clues:

• Military opponent
• The Riddler, to Batman
• Hostile bunch
• The North and the South, in the Civil War
• Achilles and Hector
• They're against you
• The North and South, in the Civil War
• Axis powers, to the Allies
• Someone to keep closer
• Adversary in war
• Opposing military force
• You want to beat them
• "An ___ of the People" (Ibsen)
• They aren't behind you
• Foe hiding, in a way, in the puzzle's four longest answers