Son the one she loves in general (7)

I believe the answer is:

sherman

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'general' is the definition.
(I know that Sherman is a general)

'son the one she loves in' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'the one' becomes 'an' (an apple is one apple).
'she loves' becomes 'herm' (I am not sure about this - if you are sure you should believe this answer much more).
'in' indicates putting letters inside.
's'+'an'='san'
'san' placed around 'herm' is 'SHERMAN'.

Can you help me to learn more?

(Other definitions for sherman that I've seen before include "William -, US Civil War general (Atlanta)" , "US general, marched through Georgia" .)

I've seen this clue in The Sun.

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