Possible Clues:

• One living on another camp for airborne troops?
• Leach
• Level area, place for sponge
• Solider finds place to mooch locally
• One living off another in Colchester camp, say?
• Leech returns hammer to a development
• Soldier's plot to be a freeloader
• Leech with soldier gets to sit at centre of arena
• 'What's Eating Gilbert Grape' [2019]
• Leech (informal)