Decoration America awarded to President finally includes servicemen (9)

I believe the answer is:

adornment

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'decoration' is the definition.
(adornment is a kind of decoration)

'to president finally includes servicemen' is the wordplay.
'to' becomes 'adorn' (I can't explain this - if you can you should believe this answer much more).
'finally' suggests the final letters.
'includes' is an insertion indicator.
'servicemen' becomes 'men' ('man' can be a synonym of 'serviceman').
The last letter of 'president' is 't'.
'adorn'+'t'='adornt'
'adornt' enclosing 'men' is 'ADORNMENT'.

'america awarded' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for adornment that I've seen before include "Trim" , "decking" , "Decoration" , "Making elaborate" , "Embellishment" .)

I've seen this clue in The Independent.

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