Section of government in Ukraine recalled army division (4)
I believe the answer is:
unit
'army division' is the definition.
(I've seen this in another clue)
'section of government in ukraine recalled' is the wordplay.
'section of' indicates a hidden word.
'recalled' says the letters should be written in reverse (to recall can mean to bring something back).
'tinu' can be found hidden inside 'government in ukraine'.
'tinu' back-to-front is 'UNIT'.
(Other definitions for unit that I've seen before include "A single self-contained item" , "A single, complete item" , "Kitchen fitting" , "Individual thing; one" , "Standard for measuring" .)