Charge retiring US soldier occupying Scottish island (7)
I believe the answer is:
arraign
'charge' is the definition.
(arraigning is a kind of charging)
'retiring us soldier occupying scottish island' is the wordplay.
'retiring' is a reversal indicator.
'us soldier' becomes 'gi' (I've seen this in other clues).
'occupying' indicates putting letters inside.
'scottish island' becomes 'arran' (island off the coast of Scotland).
'gi' back-to-front is 'ig'.
'ig' inserted into 'arran' is 'ARRAIGN'.
(Other definitions for arraign that I've seen before include "Call before court to answer criminal charge" , "Accuse, find fault with" , "Act against" , "Call before a court to answer an indictment" , "Accuse, put on trial" .)