Legionaries lose out, for a change in this country (7)
I believe the answer is:
nigeria
'this country' is the definition.
(Nigeria is an example)
'legionaries lose out for a change' is the wordplay.
'out' suggests deleting specific letters.
'for a change' is an anagram indicator.
'legionaries' with 'lose' taken away is 'ginarie'.
'ginarie' with letters rearranged gives 'NIGERIA'.
'in' acts as a link.
(Other definitions for nigeria that I've seen before include "part of Africa" , "African country, capital Abuja" , "I regain the African state" , "African republic, capital Abuja" , "Possible home for African" .)