Lechery of army officer outside America (4)
I believe the answer is:
lust
'lechery' is the definition.
(thesaurus)
'army officer outside america' is the wordplay.
'army officer' becomes 'lt' (I've seen this in other clues).
'outside' indicates putting letters inside.
'america' becomes 'us' (abbreviation for the United States).
'lt' enclosing 'us' is 'LUST'.
'of' is the link.
(Other definitions for lust that I've seen before include "One of the seven deadly sins" , "Depraved desire" , "Passionate desire" , "Deadly sin of extreme passion" , "Intense sexual desire, a deadly sin" .)