Helpful soldiers transform Sadie! (5)
I believe the answer is:
aides
'helpful soldiers' is the definition.
The answer and definition can be both people as well as being plural nouns.
Perhaps you can see a link between them that I don't see?
'transform sadie' is the wordplay.
'transform' is an anagram indicator.
'sadie' anagrammed gives 'AIDES'.
Can you help me to learn more?
(Other definitions for aides that I've seen before include "Adjutants" , "Helpers" , "Confidential assistants" , "Ministerial assistants" , "Helpful officers" .)