### Clue: Army loses head with half-cut bugler, a stable man once (6)
### Answer: OSTLER 
 ### Explanation: Definition: a stable man once
 "host"(an army/a large number of people or things) **minus ****its 1st letter**(loses head) **plus**(with) **last 3 letters of**(half-cut) "bugler".
Defn: Formerly/once, a man who looks after horses in an inn's stable.