Duke giving support to English soldiers? Correct (5)
I believe the answer is:
emend
'correct' is the definition.
(thesaurus)
'duke giving support to english soldiers?' is the wordplay.
'duke' becomes 'd'.
'giving support to' says to put letters next to each other.
'english' becomes 'e' (abbreviation).
'soldiers?' becomes 'men' (soldier is a kind of man).
'e'+'men'='emen'
'd' after 'emen' is 'EMEND'.
(Other definitions for emend that I've seen before include "Modify" , "Correct and improve the text" , "Correct; edit" , "change" , "get rid of faults" .)