European soldiers returning to mid-east oddly missing adversaries ...

• Feudists
• The Hatfields and the McCoys, e.g
• "Them," to "us"
• North and South Korea, e.g
• Brutus and Antony, e.g.
• The Sith, to the Jedi
• "...and the fourth for mine _____": Addison
• They're opposed in war
• Parties far from festive

Wikipedia Word definitions in Wikipedia
Enemies are an Irish post-rock band from Kilcoole , Ireland .