### Clue: Sleep with soldier, putting head down for a sausage? (6)
### Answer: HAGGIS 
 ### Explanation: Definition: a sausage
 [ SHAG(to sleep with;slang for to have sexual intercourse with) GI(abbrev. for an American soldier) ] **with its 1st letter moved to the end**(putting head down, in a down clue).
My initial entry was BANG ER, with Royal Engineer being the soldier.
An acquired taste, I think, from the looks of it:
And in addition, picture what's conjured by the clue's surface.