Tin drum collected spiritlessly by the military escort (3,5)
I believe the answer is:
tea caddy
'tin' is the definition.
(tea caddy is a kind of tin)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tea caddy that I've seen before include "drink dispenser" , "Container for bags (or leaves)" , "leaves container in the kitchen" , "source of refreshment?" , "Container for Earl Grey etc" .)