Army officer in outfit wearing beard I shaped (9)
I believe the answer is:
brigadier
'army officer' is the definition.
(I've seen this before)
'outfit wearing beard i shaped' is the wordplay.
'outfit' becomes 'rig' (rigging is a kind of outfiting).
'wearing' means one lot of letters goes inside another.
'shaped' indicates an anagram.
'beard'+'i'='beardi'
'beardi' is an anagram of 'badier'.
'rig' inserted inside 'badier' is 'BRIGADIER'.
'in' acts as a link.
(Other definitions for brigadier that I've seen before include "Army rank" , "Rank above colonel" , "Air bridge over to the military officer" , "Officer in charge of army unit, part of division" , "Military leader" .)