Related Clues:

• Some soldiers (European) get together
• Join some troops heading east
• Insultingly, one declining to earn a crust?
• Single European Union
• Half a purple flower unpopular with union
• Blackleg
• Combine - join
• Blackleg - sign of injury
• Sore - blackleg
• Dried surface of wound
• Crosser of picket line
• Evidence of healing wound - crosser of picket line
• Wound's crust
• Wound crust
• Dried crust on wound