Crossword Genius

Shocking reminder that keeps army officer at home (7)

Ross

I believe the answer is:

jolting

'shocking' is the definition.
(thesaurus)

'reminder that keeps army officer at home' is the wordplay.
'reminder' becomes 'jog' (I've seen this before).
'that keeps' means one lot of letters goes inside another.
'army officer' becomes 'lt' (I've seen this in other clues).
'at home' becomes 'in' ('in' can be similar in meaning to 'at home').
'lt'+'in'='ltin'
'jog' going around 'ltin' is 'JOLTING'.

I've seen this clue in The Times.
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