Officers reported duty in practical details (5,5)

I believe the answer is:

brass tacks

I'm a little stuck... Click here to teach me more about this clue!

'practical details' is the definition.
'brass tacks' can be an answer for 'details' (thesaurus). I am not sure about the 'practical' bit.

'officers reported duty' is the wordplay.
'officers' becomes 'brass' (I've seen this in another clue).
'reported' indicates a 'sounds like' (homophone) clue.
'duty' becomes 'tax' (I've seen this in another clue).
'tax' sounds like 'tacks'.
'brass'+'tacks'='BRASS TACKS'

'in' is the link.

Can you help me to learn more?

(Other definitions for brass tacks that I've seen before include "Details of practical business (colloq.)" , "Real business" , "Hard facts" , "Basic facts (colloq.)" , "Nitty-gritty (got down to)" .)

I've seen this clue in The Daily Express.

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