With Frenchman backing US soldier, chorus is electrifying (10)

I believe the answer is:

energising

'is electrifying' is the definition.

'with frenchman backing us soldier chorus' is the wordplay.
'with' is a charade indicator (letters next to each other).
'frenchman' becomes 'rene'.
'backing' says the letters should be written backwards.
'us soldier' becomes 'gi' (I've seen this in other clues).
'chorus' becomes 'sing' (I've seen this before).
'rene' back-to-front is 'ener'.
'ener'+'gi' is 'energi'.
'energi'+'sing'='ENERGISING'

I've seen this clue in The Telegraph.

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