Servicemen with quantities of booze (5)
I believe the answer is:
units
This clue is a double definition.
'servicemen' is the first definition.
(a unit can be a body of soldiers)
'quantities of booze' is the second definition.
('unit' is standard measure of alcohol)
'with' acts as a link.
(Other definitions for units that I've seen before include "Measures of alcohol" , "Single things" , "Single items or standard quantities" , "Individual things as parts of a whole" , "Apparatus similar to barbecue" .)