Important army officer (5)

I believe the answer is:

major

This clue is a double definition.

'important' is the first definition.
(major can mean of great importance)

'army officer' is the second definition.
(I've seen this before)

(Other definitions for major that I've seen before include "Important; old Animal Farm boar" , "Army officer immediately junior to a lieutenant colonel" , "See 2" , "Uppermost" , "Big - PM" .)

I've seen this clue in The Sun.

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