Puts a team together in department swamped by mixed-up files (6)
I believe the answer is:
fields
'puts a team together' is the definition.
I can't judge whether this definition defines the answer.
'department swamped by mixed-up files' is the wordplay.
'department' becomes 'd' (abbreviation eg in MOD Ministry of Defence).
'swamped by' indicates putting letters inside.
'mixed up' indicates anagramming the letters.
'files' anagrammed gives 'fiels'.
'd' inserted inside 'fiels' is 'FIELDS'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for fields that I've seen before include "Meadows - WC in cinema?" , "much-loved singer" , "Areas of farmland" , "Enclosed pieces of land" , "Enclosed piece of land" .)