Natural for soldier to enter bar (7)
I believe the answer is:
logical
'natural' is the definition.
(thesaurus)
'soldier to enter bar' is the wordplay.
'soldier' becomes 'gi' (GI can mean a US soldier).
'to enter' indicates putting letters inside.
'bar' becomes 'local' (I've seen this before).
'gi' put inside 'local' is 'LOGICAL'.
'for' acts as a link.
(Other definitions for logical that I've seen before include "Well reasoned" , "entirely reasonable" , "Based on reason" , "Well-reasoned" , "Sound" .)